List of cutaneous conditions
From WikiMD's Wellness Encyclopedia
The following is a list of common cutaneous conditions, which are disorders that affect the skin, hair, and nails. Each condition is linked to a more detailed article that discusses its characteristics, causes, and treatment options.
Acne Vulgaris[edit | edit source]
- Acne Vulgaris - A common inflammatory skin disease characterized by papules, pustules, and comedones. It primarily affects areas of the skin with dense sebaceous glands, including the face, upper part of the chest, and back.
Psoriasis[edit | edit source]
- Psoriasis - A chronic autoimmune disease that leads to an overproduction of skin cells, resulting in thick, white, silvery, or red patches of skin. It is commonly associated with other serious health conditions, such as Diabetes, Heart Disease, and Depression.
Atopic Dermatitis[edit | edit source]
- Atopic Dermatitis (also known as Eczema) - A chronic skin condition that causes itchy, inflamed skin. Often seen in individuals with a history of Allergies or Asthma.
Melanoma[edit | edit source]
- Melanoma - A serious form of Skin Cancer that arises from pigment-containing cells known as Melanocytes. Early detection and treatment are crucial for a favorable outcome.
Vitiligo[edit | edit source]
- Vitiligo - A long-term skin condition characterized by patches of the skin losing their pigment. The cause is unknown, but it is believed to be due to autoimmune issues.
Cellulitis[edit | edit source]
- Cellulitis - A common, potentially serious bacterial skin infection. The affected skin appears swollen and red and is typically painful and warm to the touch.
Urticaria[edit | edit source]
- Urticaria (also known as Hives) - An outbreak of swollen, pale red bumps or plaques on the skin that appear suddenly as a result of the body's reaction to certain allergens or for unknown reasons.
Rosacea[edit | edit source]
- Rosacea - A chronic skin condition that causes redness and visible blood vessels in your face. It may also produce small, red, pus-filled bumps.
A-Z list of skin conditions[edit | edit source]
- ABCD syndrome
- ADAM complex
- ANOTHER syndrome
- Aagenaes syndrome
- Abdallat–Davis–Farrage syndrome
- Abdominal chemodectomas with cutaneous angiolipomas
- Abrasion (medical)
- Abrikossoff's tumor
- Abrikossov's tumor
- Acantholytic herpetiform dermatitis
- Acanthoma fissuratum
- Acanthome cellules claires of Degos and Civatte
- Acanthosis nigricans
- Acanthosis nigricans type I
- Acanthosis nigricans type II
- Acanthosis nigricans type III
- Acatalasemia
- Acatalasia
- Accelerated rheumatoid nodulosis
- Accessory auricle
- Accessory nail of the fifth toe
- Accessory nipple
- Acetosyringone
- Achenbach syndrome
- Achondroplasia
- Acne
- Acne aestivalis
- Acne conglobata
- Acne cosmetica
- Acne excoriée des jeunes filles
- Acne fulminans
- Acne infantum
- Acne inversa
- Acne keloidalis
- Acne keloidalis nuchae
- Acne mechanica
- Acne medicamentosa
- Acne miliaris necrotica
- Acne necrotica
- Acne neonatorum
- Acne rosacea
- Acne varioliformis
- Acne with facial edema
- Acneiform eruption
- Acquired C1 esterase inhibitor deficiency
- Acquired aquagenic syringeal acrokeratoderma
- Acquired bilateral nevus of Ota-like macules
- Acquired dermal melanocytosis
- Acquired digital fibrokeratoma
- Acquired generalized hypertrichosis
- Acquired generalized lipodystrophy
- Acquired hypertrichosis lanuginosa
- Acquired hypogammaglobulinemia
- Acquired ichthyosis
- Acquired idiopathic generalized anhidrosis
- Acquired partial lipodystrophy
- Acquired perforating collagenosis
- Acquired perforating dermatosis
- Acquired periungual fibrokeratoma
- Acquired plantar keratoderma
- Acquired progressive kinking
- Acquired progressive lymphangioma
- Acquired tufted angioma
- Acral arteriolar ectasia
- Acral fibrokeratoma
- Acral mycoses fungoides
- Acral myxoinflammatory fibroblastic sarcoma
- Acral necrosis
- Acral nevus
- Acral persistent papular mucinosis
- Acroangiodermatitis
- Acroangiodermatitis of Mali
- Acrocyanosis
- Acrodermatitis
- Acrodermatitis continua
- Acrodermatitis continua of Hallopeau
- Acrodermatitis continua suppurativa Hallopeau
- Acrodermatitis perstans
- Acrokeratoelastoidosis
- Acrokeratoelastoidosis of Costa
- Acrokeratosis neoplastica
- Acrokeratotic poikiloderma
- Acromegaly
- Acromelalgia
- Acromelanism
- Acroosteolysis
- Acropustulosis of infancy
- Acrospiroma
- Acrosyringeal nevus of Weedon and Lewis
- Actinic cheilitis
- Actinic cheilosis
- Actinic granuloma
- Actinic prurigo
- Actinic purpura
- Actinic reticuloid
- Acute febrile neutrophilic dermatosis
- Acute febrile ulcerative acne
- Acute generalized exanthematous pustulosis
- Acute guttate parapsoriasis
- Acute hemorrhagic edema of childhood
- Acute hemorrhagic edema of infancy
- Acute membranous gingivitis
- Acute necrotizing ulcerative gingivostomatitis
- Acute parapsoriasis
- Acute pityriasis lichenoides
- Adams–Oliver syndrome
- Addison's disease
- Adenoid seborrheic keratosis
- Adenolipoma
- Adenoma sebaceum
- Adermatoglyphia
- Adiposis dolorosa
- Adrenal SAHA syndrome
- Adrenal carcinoma
- Adrenal hyperplasia
- Adrenergic urticaria
- Adrenocortical carcinoma
- Adrenoleukodystrophy
- Adult blaschkitis
- African blackwood dermatitis
- Aggressive digital papillary adenocarcinoma
- Aggressive fibromatosis
- Aggressive infantile fibromatosis
- Ainhum
- Airbag dermatitis
- Albinism in humans
- Albinism – black lock – cell migration disorder of the neurocytes of the gut – deafness syndrome
- Albinism–black lock–cell migration disorder of the neurocytes of the gut–deafness syndrome
- Albinism–deafness syndrome
- Alezzandrini syndrome
- Alkaptonuria
- Allergic granulomatosis
- Allopurinol hypersensitivity syndrome
- Alopecia areata
- Alopecia cicatrisata
- Alopecia in animals
- Alopecia mucinosa
- Alopecia neoplastica
- Alopecia totalis
- Alopecia unguium
- Alopecia universalis
- Alpha1-protease deficiency panniculitis
- Alpha1-proteinase deficiency panniculitis
- Alymphocytosis
- Amelanotic melanoma
- Aminolevulinic acid dehydratase deficiency porphyria
- Amniotic band sequence
- Amputation neuroma
- Amyloid purpura
- Amyloidosis
- Anagen effluvium
- Anaphylactoid purpura
- Anaphylaxis
- Anasarca
- Anderson-Fabry disease
- Anderson–Fabry disease
- Androgenetic alopecia
- Anetoderma
- Angel's kiss
- Angina bullosa haemorrhagica
- Angioblastoma
- Angioblastoma of Nakagawa
- Angioedema
- Angiofibroma
- Angiofibroma of soft tissue
- Angioimmunoblastic T-cell lymphoma
- Angioimmunoblastic lymphadenopathy with dysproteinemia
- Angiokeratoma
- Angiokeratoma circumscriptum naeviforme
- Angiokeratoma corporis diffusum
- Angiokeratoma of the scrotum and vulva
- Angioleiomyoma
- Angiolipoleiomyoma
- Angiolipoma
- Angiolymphoid hyperplasia with eosinophilia
- Angioma
- Angioma serpiginosum
- Angiomatosis
- Angioosteohypertrophy syndrome
- Angiosarcoma
- Angiotropic large cell lymphoma
- Angular cheilitis
- Ankle flare
- Annular elastolytic giant-cell granuloma
- Annular erythema of infancy
- Annular pustular psoriasis
- Anonychia
- Anticonvulsant hypersensitivity syndrome
- Aortic arch syndrome
- Aphthosis
- Aphthous stomatitis
- Aplasia cutis congenita
- Aplasia cutis congenita-intestinal lymphangiectasia syndrome
- Apocrine bromhidrosis
- Apocrine gland carcinoma
- Apocrine nevus
- Apolipoprotein B deficiency
- Aponeurotic fibroma
- Apparent leukonychia
- Application site reaction
- Aquadynia
- Aquagenic pruritus
- Aquagenic urticaria
- Aquired hypertrichosis lanuginosa
- Argyria
- Arrhenoblastoma
- Arsenic poisoning
- Arsenical keratosis
- Arterial insufficiency ulcer
- Arterial tortuosity syndrome
- Arteriosclerosis obliterans
- Arteriovenous fistula
- Arthropod assault
- Atrichia with papular lesions
- Atrophia maculosa varioliformis cutis
- Atrophic actinic keratosis
- Atrophic connective tissue panniculitis
- Atrophic polychondritis
- Atrophie blanche
- Atrophoderma
- Atrophodermia vermiculata
- Atypical fibroxanthoma
- Atypical lichen myxedematosus
- Atypical lipoma
- Atypical lipomatous tumor
- Atypical mole
- Atypical nevus
- Atypical tuberous myxedema
- Auricular endochondrial pseudocyst
- Autoerythrocyte sensitization
- Autoimmune estrogen dermatitis
- Autoimmune progesterone dermatitis
- Autoimmune skin diseases in dogs
- Autoimmune thrombocytopenic purpura
- Autoimmune urticaria
- Autoinflammatory diseases
- Autoinflammatory syndromes
- Autosensitization dermatitis
- Autosomal-dominant hereditary punctate keratoderma associated with malignancy
- Axial spondyloarthritis
- Axillary granular parakeratosis
- B-K mole
- B-K mole syndrome
- BPAg1
- Baboon syndrome
- Balanitis circinata
- Balanitis circumscripta plasmacellularis
- Balanitis plasmacellularis
- Balanoposthitis chronica circumscripta plasmacellularis
- Bald tongue
- Balloon cell nevus
- Bamboo hair
- Banal nevus
- Banko-kerende
- Bankokerend
- Bannayan–Riley–Ruvalcaba syndrome
- Barber's interdigital pilonidal sinus
- Bare lymphocyte syndrome
- Barraquer–Simons syndrome
- Bart syndrome
- Basal Cell Nevus syndrome
- Basal cell nevus syndrome
- Basal cell papilloma
- Basal-cell carcinoma
- Basaloid follicular hamartoma
- Basosquamous cell acanthoma
- Bathing trunk nevus
- Bazex syndrome
- Bazin's hydroa vacciniforme
- Beaded hair
- Beau's lines
- Becker's melanosis
- Becker's nevus
- Becker's pigmentary hamartoma
- Behçet's disease
- Behçet's syndrome
- Benign cephalic histiocytosis
- Benign juvenile melanoma
- Benign lichenoid keratosis
- Benign lymphangioendothelioma
- Benign lymphocytic infiltration of the skin
- Benign melanocytic nevus
- Benign migratory glossitis
- Benign migratory stomatitis
- Benign mucosal pemphigoid
- Benign mucous membrane pemphigoid
- Benign neonatal hemangiomatosis
- Benign papular acantholytic dermatosis
- Benign solitary fibrous papule
- Benign symmetric lipomatosis
- Benign symmetric lipomatosis of Launois–Bensaude
- Beradinelli–Seip syndrome
- Berardinelli–Seip syndrome
- Berlock dermatitis
- Berloque dermatitis
- Bernhardt-Roth syndrome
- Beryllium granuloma
- Besnier prurigo
- Bier spots
- Birbeck granules
- Birt–Hogg–Dubé syndrome
- Bismuthia
- Bizarre cutaneous neurofibroma
- Black hairy tongue
- Black heel and palm
- Blau syndrome
- Bleb (medicine)
- Blennorrhea
- Blepharophyma
- Blister
- Blister beetle dermatitis
- Bloch–Siemens syndrome
- Bloch–Sulzberger disease
- Bloch–Sulzberger syndrome
- Blood blister
- Blue nails
- Blue neuronevus
- Blue nevus
- Blueberry muffin baby
- Body dysmorphic disorder
- Body-focused repetitive behavior
- Borrelial lymphocytoma
- Bowel bypass syndrome
- Bowel bypass syndrome without bowel bypass
- Bowel-associated dermatosis–arthritis syndrome
- Bowenoid papulosis
- Brachioradial pruritus
- Brachyonychia
- Brain-like heterotopia
- Branchial cleft cyst
- Branchial cyst
- Breast eczema
- Breslow's depth
- Bridges–Good syndrome
- Brittle nails
- Broad beta disease
- Bromhidrosis
- Bromidrosis
- Bromism
- Bromoderma
- Bronchogenic cyst
- Brooke–Fordyce syndrome
- Brooke–Spiegler syndrome
- Brunsting–Perry cicatricial pemphigoid
- Bruton syndrome
- Bubble hair deformity
- Bubo
- Buckley syndrome
- Bullosis diabeticorum
- Bullous drug eruption
- Bullous drug reaction
- Bullous eruption of diabetes mellitus
- Bullous lymphedema
- Bullous pemphigoid
- Bullous small vessel vasculitis
- Bullous variant of small vessel vasculitis
- Burn scar contracture
- Burning mouth syndrome
- Burning tongue
- Buschke disease
- Buschke–Ollendorff syndrome
- Bushke disease
- CADASIL
- CANDLE syndrome
- CD25 deficiency
- CD30+ cutaneous T-cell lymphoma
- CREST syndrome
- CYLD cutaneous syndrome
- Calcaneal petechiae
- Calcifying aponeurotic fibroma
- Calcifying epithelioma of Malherbe
- Calcinosis cutis
- Calcinosis – Raynaud phenomenon – esophageal dysmotility – sclerodactyly – telangiectasia syndrome
- Calcinosis–Raynaud phenomenon–esophageal dysmotility–sclerodactyly–telangiectasia syndrome
- Calciphylaxis
- Caliber persistent artery
- Callous ulcer
- Callus
- Calomel disease
- Camisa disease
- Canities subita
- Canker sores
- Canthaxanthin
- Capillary aneurysms
- Capillary hemangioma
- Capillary leak syndrome
- Capillary malformation
- Caput succedaneum
- Carbon stain
- Carcinoid
- Cardiocutaneous syndrome
- Cardiofaciocutaneous syndrome
- Carney complex
- Carotenoderma
- Carotenosis
- Cartilage–hair hypoplasia
- Cauliflower ear
- Cavernous hemangioma
- Cavernous venous malformation
- Caviar tongue
- Cellular angiofibroma
- Central centrifugal cicatricial alopecia
- Central papillary atrophy
- Centrifugal abdominal lipodystrophy
- Centrifugal lipodystrophy
- Centrofacial lentiginosis
- Centurion syndrome
- Cephalic brain-like heterotopia
- Cephalothoracic lipodystrophy
- Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy syndrome
- Cerebrotendineous xanthomatosis
- Cervical accessory tragus
- Chafing (skin)
- Cheilitis
- Chemotherapy-induced acral erythema
- Chemotherapy-induced hyperpigmentation
- Cherry angioma
- Cherry hemangioma
- Cheveux incoiffables
- Chevron nail
- Chilblain lupus erythematosus
- Chilblains
- Childhood granulomatous periorificial dermatitis
- Childhood type of generalized eruption of cutaneous mastocytosis
- Chloasma faciei
- Chloracne
- Chloroma
- Cholestasis of pregnancy
- Cholestatic pruritus
- Cholesterol embolism
- Cholinergic urticaria
- Chondrodermatitis nodularis chronica helicis
- Chondrodermatitis nodularis helicis
- Chondrodysplasia punctata
- Chondroid lipoma
- Chondroid syringoma
- Chondroma of soft parts
- Chordoma
- Choristoma
- Chromhidrosis
- Chromidrose plantaire
- Chronic actinic dermatitis
- Chronic bullous disease of childhood
- Chronic cheek biting
- Chronic cheek chewing
- Chronic cicatrix keratosis
- Chronic granulomatous disease
- Chronic granulomatous disorder
- Chronic guttate parapsoriasis
- Chronic infantile neurologic cutaneous and articular syndrome
- Chronic multifocal Langerhans cell histiocytosis
- Chronic panniculitis with lipomembranous changes
- Chronic photosensitivity dermatitis
- Chronic pityriasis lichenoides
- Chronic scar keratosis
- Chronic superficial dermatitis
- Chronic upper facial erythematous edema
- Chronic urticaria as a manifestation of venulitis
- Chronic vesiculobullous hand eczema
- Chronic wound
- Chrysiasis
- Chylomicronemia
- Chylomicronemia syndrome
- Chédiak–Higashi syndrome
- Ciliated cyst of the vulva
- Circumostomy eczema
- Citrullinemia
- Clark's level
- Clark's nevus
- Classic basal cell carcinoma
- Clavus (medicine)
- Clear cell acanthoma
- Clear cell carcinoma of the skin
- Clear cell hidradenoma
- Climacteric keratoderma
- Cobb syndrome
- Cock's peculiar tumour
- Cold injury
- Cold urticaria
- Collagenoma
- Collagenous fibroma
- Colored sweat
- Coma blister
- Combined hyperlipidemia
- Comedo
- Comedo nevus
- Common acquired melanocytic nevus
- Common blue nevus
- Common variable immunodeficiency
- Complement deficiency
- Complex regional pain syndrome
- Condylomata lata
- Confluent and reticulated papillomatosis
- Congenital absence of skin
- Congenital adrenal hyperplasia
- Congenital adrenal hyperplasia due to 11β-hydroxylase deficiency
- Congenital adrenal hyperplasia due to 17α-hydroxylase deficiency
- Congenital adrenal hyperplasia due to 21-hydroxylase deficiency
- Congenital adrenal hyperplasia due to 3β-hydroxysteroid dehydrogenase deficiency
- Congenital auricular fistula
- Congenital cartilaginous rest of the neck
- Congenital constriction bands
- Congenital cutaneovisceral angiomatosis with thrombocytopenia
- Congenital dermal melanocytosis
- Congenital dermal sinus
- Congenital erosive and vesicular dermatosis
- Congenital erythropoietic porphyria
- Congenital fascial dystrophy
- Congenital generalized fibromatosis
- Congenital generalized lipodystrophy
- Congenital generalized phlebectasia
- Congenital hemangiopericytoma
- Congenital hypertrichosis lanuginosa
- Congenital hypertrophy of the lateral fold of the hallux
- Congenital insensitivity to pain with anhidrosis
- Congenital iodine deficiency syndrome
- Congenital lip pit
- Congenital malformations of the dermatoglyphs
- Congenital melanocytic nevus
- Congenital melanosis bulbi
- Congenital multicentric fibromatosis
- Congenital nevocytic nevus
- Congenital nevomelanocytic nevus
- Congenital non-progressive hemangioma
- Congenital onychodysplasia of the index fingers
- Congenital preauricular fistula
- Congenital self-healing reticulohistiocytosis
- Congenital sinus of the lower lip
- Congenital smooth muscle hamartoma
- Congestion eczema
- Conjunctival squamous cell carcinoma
- Connective tissue nevus
- Conradi–Hünermann syndrome
- Constriction ring syndrome
- Contact urticaria
- Coral cut
- Corn (pathology)
- Corneodermatoosseous syndrome
- Cornu cutaneum
- Corona phlebectatica
- Corticosteroid-induced lipodystrophy
- Cosmetic acne
- Cowden syndrome
- Cowden's disease
- Cracked nipple
- Cranial arteritis
- Craniosynostosis–anal anomalies–porokeratosis syndrome
- Cross syndrome
- Cryofibrinogenemic purpura
- Cryoglobulinemic purpura
- Cryoglobulinemic vasculitis
- Cryopyrin-associated periodic syndrome
- Cutaneous B-cell lymphoma
- Cutaneous T-cell lymphoma
- Cutaneous amoebiasis
- Cutaneous apudoma
- Cutaneous ciliated cyst
- Cutaneous columnar cyst
- Cutaneous endometriosis
- Cutaneous focal mucinosis
- Cutaneous horn
- Cutaneous leukocytoclastic angiitis
- Cutaneous leukocytoclastic vasculitis
- Cutaneous lobular neuromyxoma
- Cutaneous lupus mucinosis
- Cutaneous lymphoid hyperplasia
- Cutaneous lymphoma
- Cutaneous manifestations of COVID-19
- Cutaneous meningioma
- Cutaneous mucinosis of infancy
- Cutaneous myxoma
- Cutaneous necrotizing venulitis
- Cutaneous papilloma
- Cutaneous perforating disorders
- Cutaneous sinus of dental origin
- Cutaneous small-vessel vasculitis
- Cutaneous squamous-cell carcinoma
- Cutaneous tag
- Cutis aplasia
- Cutis marmorata
- Cutis marmorata telangiectatica congenita
- Cutis rhomboidalis nuchae
- Cyanosis
- Cyclic neutropenia
- Cylindroma
- Cyprus facial neuromusculoskeletal syndrome
- Cystic chondromalacia
- Cystic papilloma
- Dabska tumor
- Dabska-type hemangioendothelioma
- Dactylolysis spontanea
- Daentl Townsend Siegel syndrome
- Darier's disease
- Darier–Roussy disease
- Darier–Roussy sarcoid
- Darier–White disease
- Dark dot disease
- Dartoic leiomyoma
- De Morgan spot
- DeSanctis–Cacchione syndrome
- Dead finger
- Decubitus ulcer
- Deep granuloma annulare
- Deep gyrate erythema
- Defatting (medical)
- Defibrinating syndrome
- Deficiency of the interleukin-1–receptor antagonist
- Degos acanthoma
- Delayed blister
- Delayed pressure urticaria
- Delusional parasitosis
- Dental sinus
- Dercum's disease
- Dermal bone
- Dermal cylindroma
- Dermal dendrocyte hamartoma
- Dermal dendrocytoma
- Dermal duct tumor
- Dermal eccrine cylindroma
- Dermal melanocyte hamartoma
- Dermal melanocytoma
- Dermal melanocytosis
- Dermatitis
- Dermatitis artefacta
- Dermatitis exfoliativa
- Dermatitis herpetiformis
- Dermatitis papillaris capillitii
- Dermatitis psoriasiformis nodularis
- Dermatitis repens
- Dermatitis repens Crocker
- Dermatofibroma
- Dermatofibrosarcoma protuberans
- Dermatofibrosarcoma protuberans, fibrosarcomatous
- Dermatofibrosis lenticularis disseminata
- Dermatographic urticaria
- Dermatographism
- Dermatoheliosis
- Dermatomycosis
- Dermatomyositis
- Dermatoosteolysis, Kirghizian type
- Dermatopathia pigmentosa reticularis
- Dermatopathia pigmentosa reticularis hyperkeratotica et mutilans
- Dermatopathia pigmentosa reticularis hypohidotica et atrophica
- Dermatopathic lymphadenopathy
- Dermatophagia
- Dermatophytid
- Dermatoses induced by Personal Protective Equipment
- Dermatoses of pregnancy
- Dermatosis neglecta
- Dermatosis papulosa nigra
- Dermatothlasia
- Dermographism
- Dermoid cyst
- Desmons' syndrome
- Desmoplastic fibroblastoma
- Desmoplastic melanoma
- Desmoplastic trichoepithelioma
- Desquamation
- Desquamative gingivitis
- Devergie's disease
- DiGeorge anomaly
- DiGeorge syndrome
- Diabetic bulla
- Diabetic cheiroarthropathy
- Diabetic dermadrome
- Diabetic dermopathy
- Diabetic foot infection
- Diffuse infantile fibromatosis
- Diffuse large B-cell lymphoma associated with chronic inflammation
- Diffuse neonatal hemangiomatosis
- Digital mucous cyst
- Digital papillary adenocarcinoma
- Digitate keratoses
- Digitate seborrheic keratosis
- Dilantin hypersensitivity syndrome
- Dilated pore
- Dilated pore of Winer
- Direct DNA damage
- Discrete papular lichen myxedematosus
- Dissecting cellulitis of the scalp
- Dissecting folliculitis
- Disseminate and recurrent infundibulofolliculitis
- Disseminated intravascular coagulation
- Disseminated spiked hyperkeratosis
- Disseminated xanthosiderohistiocytosis
- Dolichol kinase deficiency
- Dolichonychia
- Dorsal pterygium
- Doss porphyria
- Doucas and Kapetanakis pigmented purpura
- Dowling–Degos' disease
- Drug eruption
- Drug rash with eosinophilia and systemic symptoms
- Drug-induced angioedema
- Drug-induced keratoderma
- Drug-induced lichen planus
- Drug-induced lipodystrophy
- Drug-induced lupus erythematosus
- Drug-induced pigmentation
- Drug-induced pruritus
- Drug-induced purpura
- Drug-induced thrombocytopenic purpura
- Drug-induced urticaria
- Drug-related gingival hyperplasia
- Drumstick fingers
- Dry bite
- Duhring disease
- Duncan's disease
- Dunnigan familial partial lipodystrophy
- Dupuytren's diathesis
- Dupuytren's disease
- Dyschromatosis symmetrica hereditaria
- Dyschromatosis universalis hereditaria
- Dyschromia
- Dyschromic and atrophic variation of scleroderma
- Dyskeratosis
- Dysmorphic syndrome
- Dysmorphophobia
- Dysplastic melanocytic nevus
- Dysplastic nail
- Dysplastic nevus
- Dysplastic nevus syndrome
- Dystrophia unguis mediana canaliformis
- Dystrophic calcinosis cutis
- Ear eczema
- Ear pit
- Ear tag (medicine)
- Early-onset prurigo of pregnancy
- Eccrine angiomatous hamartoma
- Eccrine carcinoma
- Eccrine mucinosis
- Eccrine nevus
- Ectrodactyly–ectodermal dysplasia–cleft syndrome
- Edema blister
- Edema bulla
- Ehlers–Danlos syndromes
- Elastofibroma dorsi
- Elastoma
- Elastosis perforans serpiginosa
- Elejalde syndrome
- Elephantiasis
- Embolia cutis medicamentosa
- Embryonic lipoma
- Emotional hyperhidrosis
- En coup de sabre
- Enanthem
- Encephalocraniocutaneous lipomatosis
- Endemic pemphigus foliaceus
- Endochondral pseudocyst
- Enzymatic panniculitis
- Eosinophilia–myalgia syndrome
- Eosinophilic cellulitis
- Eosinophilic dermatosis
- Eosinophilic fasciitis
- Eosinophilic granuloma
- Eosinophilic granulomatosis with polyangiitis
- Eosinophilic pustular folliculitis in infancy
- Eosinophilic pustular folliculitis of infancy
- Eosinophilic ulcer of the oral mucosa
- Eosinophilic ulcer of the tongue
- Eosinophilic vasculitis
- Ephelis
- Epidemic dropsy
- Epidermal cyst
- Epidermal inclusion cyst
- Epidermal nevus syndrome
- Epidermal polycystic disease
- Epidermodysplasia verruciformis
- Epidermoid cyst
- Epidermolysis bullosa acquisita
- Epidermolytic acanthoma
- Episodic angioedema with eosinophilia
- Epithelioid and spindle-cell nevus
- Epithelioid cell histiocytoma
- Epithelioid hemangioendothelioma
- Epithelioid hemangioma
- Epithelioid sarcoma
- Epithelioma adenoides cysticum
- Epstein–Barr virus–associated lymphoproliferative diseases
- Epulis
- Epulis fissuratum
- Equestrian perniosis
- Erosive pustular dermatitis of the scalp
- Eruptive hemangioma
- Eruptive histiocytoma
- Eruptive hypomelanosis
- Eruptive vellus hair cyst
- Eruptive xanthoma
- Erythema
- Erythema ab igne
- Erythema annulare centrifugum
- Erythema chronicum migrans
- Erythema elevatum diutinum
- Erythema gyratum repens
- Erythema marginatum
- Erythema multiforme
- Erythema multiforme major
- Erythema multiforme minor
- Erythema multiforme minor–erythema multiforme von Hebra
- Erythema nodosum
- Erythema nodosum et multiforme
- Erythema nodosum migrans
- Erythema perstans
- Erythema toxicum
- Erythema toxicum neonatorum
- Erythematotelangiectatic rosacea
- Erythermalgia
- Erythredemic polyneuropathy
- Erythremia
- Erythrocyanosis crurum
- Erythroderma
- Erythromelalgia
- Erythromelanosis follicularis faciei et colli
- Erythroplakia
- Erythroplasia
- Erythropoietic porphyria
- Erythropoietic protoporphyria
- Eschar
- Essential dermatitis
- Exanthematic pustular psoriasis
- Excess ovarian androgen release syndrome
- Excoriated acne
- Excoriation disorder
- Exercise-induced urticaria
- Exfoliative dermatitis
- Extramammary Paget's disease
- Extranodal NK/T-cell lymphoma, nasal type
- Extranodal natural killer cell lymphoma
- Extraskeletal chondroma
- Exudative hyponychial dermatitis
- Eyelid cysts, palmoplantar keratoderma, hypodontia, and hypotrichosis
- FACES syndrome
- Fabry disease
- Factitial lymphedema
- Factitious dermatitis
- Familial Amyloidosis, Finnish Type
- Familial Mediterranean fever
- Familial alpha-lipoprotein deficiency
- Familial amyloid polyneuropathy
- Familial atypical multiple mole–melanoma syndrome
- Familial cold autoinflammatory syndrome
- Familial combined hyperlipidemia
- Familial cutaneous amyloidosis
- Familial cutaneous papillomatosis
- Familial defective apolipoprotein B-100
- Familial disseminated comedones without dyskeratosis
- Familial disseminated piliform hyperkeratosis
- Familial dysautonomia
- Familial dysbetalipoproteinemia
- Familial hypertriglyceridemia
- Familial melanoma syndrome
- Familial multiple cafe-au-lait spots
- Familial myxovascular fibromas
- Familial occurrence of confluent and reticulated papillomatosis
- Familial partial lipodystrophy
- Familial polymorphous light eruption of American Indians
- Familial progressive hyperpigmentation
- Farber disease
- Fascial hernia
- Favre–Racouchot syndrome
- Feather pillow dermatitis
- Febrile neutrophilic dermatosis
- Feline acne
- Felted hair
- Ferguson Smith type of multiple self-healing keratoacanthomas
- Ferguson–Smith syndrome
- Ferreira–Marques lipoatrophia
- Fetal lipoma
- Fetid sweat
- Feuerstein and Mims syndrome
- Fibrinolysis syndrome
- Fibroblastic and myofibroblastic tumors
- Fibrocytic dysmucopolysaccharidosis
- Fibroepithelial polyp
- Fibrofolliculoma
- Fibroma
- Fibroma molluscum
- Fibroma of tendon sheath
- Fibroma pendulum
- Fibroma simplex
- Fibromatosis colli
- Fibromatosis hyalinica multiplex juvenilis
- Fibrous ankylosis
- Fibrous dermatofibroma
- Fibrous hamartoma of infancy
- Fibrous histiocytoma
- Fibrous papule of the face
- Fibrous papule of the nose
- Figurate erythema
- Finkelstein's disease
- Fire stains
- Fissure of the nipple
- Fissured tongue
- Fixed drug reaction
- Flagellate mushroom dermatitis
- Flagellate pigmentation from bleomycin
- Flash burn
- Flegel's disease
- Florid cutaneous papillomatosis
- Flushing (physiology)
- Focal facial dermal dysplasia
- Focal hyperhidrosis
- Focal palmoplantar and gingival keratosis
- Fogo selvagem
- Folded skin with scarring
- Follicular center cell lymphoma
- Follicular center lymphoma
- Follicular degeneration syndrome
- Follicular hybrid cyst
- Follicular mucinosis
- Follicular-apocrine hamartoma
- Folliculitis
- Folliculitis barbae traumatica
- Folliculitis decalvans
- Folliculitis keloidalis
- Folliculitis keloidis nuchae
- Folliculitis nares perforans
- Folliculosebaceous cystic hamartoma
- Folliculosebaceous-apocrine hamartoma
- Fong syndrome
- Fordyce spots
- Fordyce's disease
- Fox–Fordyce disease
- Fracture blister
- Freckle
- Friction blister
- Frictional alopecia
- Frontal fibrosing alopecia
- Frostbite
- Fucosidosis
- Furrowed tongue
- Fusospirillary gingivitis
- Fusospirillosis
- Fusospirochetal gingivitis
- Galli–Galli disease
- Galvanic urticaria
- Gamasoidosis
- Gammel's disease
- Ganglion cyst
- Ganglioneuroma
- Gardner fibroma
- Gardner–Diamond syndrome
- Gargoylism
- Garment nevus
- Garrod's pad
- Gaucher's disease
- General essential telangiectasia
- Generalized bullous fixed drug eruption
- Generalized congenital hypertrichosis
- Generalized eruptive histiocytoma
- Generalized eruptive keratoacanthoma of Grzybowski
- Generalized erythema
- Generalized essential telangiectasia
- Generalized granuloma annulare
- Generalized lentiginosis
- Generalized lichen myxedematosus
- Generalized telangiectasia
- Genital leiomyoma
- Geographic tongue
- Gerodermia osteodysplastica
- Gestational pemphigoid
- Gianotti–Crosti syndrome
- Giant cell arteritis
- Giant cell elastophagocytosis
- Giant cell lichenoid dermatitis
- Giant cell synovioma
- Giant hairy nevus
- Giant solitary trichoepithelioma
- Giant-cell fibroblastoma
- Giant-cell reticulohistiocytoma
- Giant-cell tumor of the tendon sheath
- Gingival fibroma
- Glanzmann–Riniker syndrome
- Glasgow smile
- Gleich's syndrome
- Glial hamartoma
- Glomangioma
- Glomangiosarcoma
- Glomeruloid hemangioma
- Glomus tumor
- Glossitis
- Glossitis areata exfoliativa
- Glossitis areata migrans
- Glucagonoma syndrome
- Gnathophyma
- Golfer's vasculitis
- Gonadal tissue neoplasm
- Good syndrome
- Gorlin syndrome
- Gorlin syndrome II
- Gorlin–Goltz syndrome
- Gottron's carcinoid papillomatosis
- Gougerot–Blum syndrome
- Gout
- Graft-versus-host disease
- Graham-Little syndrome
- Gram-negative folliculitis
- Gram-negative rosacea
- Granular cell myoblastoma
- Granular cell nerve sheath tumor
- Granular cell schwannoma
- Granular cell tumor
- Granular parakeratosis
- Granulation tissue
- Granulation tissue-type hemangioma
- Granulocytic sarcoma
- Granuloma annulare
- Granuloma annulare in HIV disease
- Granuloma faciale
- Granuloma fissuratum
- Granuloma gluteale infantum
- Granuloma gravidarum
- Granuloma multiforme
- Granulomatosis with polyangiitis
- Granulomatous cheilitis
- Granulomatous facial dermatitis
- Granulomatous rosacea
- Granulomatous slack skin
- Granulosis rubra nasi
- Gravitational dermatitis
- Gravitational eczema
- Green nail syndrome
- Griscelli syndrome
- Griscelli syndrome type 1
- Griscelli syndrome type 2
- Griscelli syndrome type 3
- Growth hormone deficiency
- Gunther disease
- Gustatory hyperhidrosis
- HIV disease–related drug reaction
- HIV-associated lipodystrophy
- HOOD syndrome
- Haber syndrome
- Haemodialysis-associated amyloidosis
- Haim–Munk syndrome
- Hair casts
- Hair follicle nevus
- Hair loss
- Hairy cell leukemia
- Hairy elbow syndrome
- Hairy leukoplakia
- Hairy palms and soles
- Hairy tongue
- Half and half nail
- Hallopeau's acrodermatitis
- Hallopeau's acrodermatitis continua
- Halo nevus
- Halogen acne
- Halogenoderma
- Hamartia (medical term)
- Hamartoma
- Hand–arm vibration syndrome
- Hangnail
- Hapalonychia
- Harlequin color change
- Harpist's finger
- Hartnup disease
- Hashimoto–Pritzker disease
- Hashimoto–Pritzker syndrome
- Hay–Wells syndrome
- Heat edema
- Heat rash
- Heat urticaria
- Heel stick wound
- Heerfordt syndrome
- Heloma
- Heloma durum
- Heloma molle
- Hemangiectatic hypertrophy
- Hemangioma with thrombocytopenia
- Hemangiomatosis
- Hemangiopericytoma
- Hemangiosarcoma
- Hematopoietic ulcer
- Hemihyperplasia–multiple lipomatosis syndrome
- Hemosiderin hyperpigmentation
- Hennekam lymphangiectasia–lymphedema syndrome
- Hennekam syndrome
- Henoch–Schönlein purpura
- Heparin necrosis
- Hepatoerythropoietic porphyria
- Hereditary angioedema
- Hereditary coproporphyria
- Hereditary haemochromatosis
- Hereditary hemorrhagic telangiectasia
- Hereditary leiomyomatosis and renal cell cancer syndrome
- Hereditary localized pruritus
- Hereditary neurocutaneous angioma
- Hereditary osteoonychodysplasia
- Hereditary polymorphous light eruption of American Indians
- Hereditary progressive mucinous histiocytosis
- Heredofamilial amyloidosis
- Hermansky–Pudlak syndrome
- Herpes
- Herpes gestationis
- Herpes simplex-associated erythema multiforme
- Herpetiform pemphigus
- Herringbone nail
- Heterotopic meningeal tissue
- Heterotopic neuroglial tissue
- Hibernoma
- Hidradenitis
- Hidradenitis suppurativa
- Hidradenocarcinoma
- Hidradenoma
- Hidradenoma papilliferum
- Hidroacanthoma simplex
- Hidrocystoma
- Hippocratic fingers
- Hirsutism
- Hirsutoid papillomas
- Histiocytic medullary reticulosis
- Histiocytic necrotizing lymphadenitis
- Histiocytoid hemangioma
- Histiocytoma
- Histiocytosis
- Histiocytosis X
- Histiocytosis with intracytoplasmic worm-like bodies
- Histopathologic diagnosis of dermatitis
- Hives
- Hobnail hemangioma
- Hook nail
- Hori's nevus
- Horton's disease
- Hot comb alopecia
- Hunan hand syndrome
- Hunter glossitis
- Hutchinson's summer prurigo
- Hutchinson's teeth
- Hyalinosis cutis et mucosae
- Hyaluronidase deficiency
- Hybrid cyst
- Hydroa aestivale
- Hydroa vacciniforme
- Hydrocarbon keratosis
- Hydrostatic bulla
- Hydroxyethyl starch-induced pruritus
- Hydroxyurea dermopathy
- Hygroma (canine disease)
- Hyper-IgD syndrome
- Hyperalgesia
- Hyperandrogenism–insulin resistance–acanthosis nigricans syndrome
- Hypereosinophilic syndrome
- Hyperesthesia
- Hypergranulosis
- Hyperhidrosis
- Hyperimmunoglobulin D syndrome
- Hyperimmunoglobulin E syndrome
- Hyperkeratosis penetrans
- Hyperkeratosis punctata
- Hyperkeratosis–hyperpigmentation syndrome
- Hyperkeratotic actinic keratosis
- Hyperkeratotic cutaneous capillary-venous malformation
- Hyperkeratotic hand dermatitis
- Hyperkeratotic seborrheic keratosis
- Hyperparathyroidism
- Hyperprolactinemic SAHA syndrome
- Hypersensitivity angiitis
- Hyperthyroidism
- Hypertrichosis
- Hypertrichosis cubiti
- Hypertrichosis lanuginosa
- Hypertrichosis lanuginosa acquisita
- Hypertrichosis simplex of the scalp
- Hypertrophic hemangioma
- Hypertrophic scar
- Hypoalgesia
- Hypocomplementemic urticarial vasculitis syndrome
- Hypocomplementemic vasculitis
- Hypodermitis sclerodermiformis
- Hypomelanotic blue nevus
- Hypoparathyroidism
- Hypopigmentation
- Hypopigmentation and microphthalmia
- Hypopituitarism
- Hyposensitivity
- Hypotrichosis
- Hysterical edema
- Hystrix-like ichthyosis–deafness syndrome
- ICF syndrome
- Iatrogenic calcinosis cutis
- Ichthyosiform erythroderma, corneal involvement, and deafness
- Ichthyosis acquisita
- Ichthyosis hystrix
- Ichthyosis hystrix gravior type Lambert
- Ichthyosis hystrix of Curth–Macklin
- Ichthyosis prematurity syndrome
- Ichthyosis with confetti
- Idiopathic calcified nodules of the scrotum
- Idiopathic eruptive macular pigmentation
- Idiopathic facial aseptic granuloma
- Idiopathic granulomatous hepatitis
- Idiopathic guttate hypomelanosis
- Idiopathic livedo reticularis with cerebrovascular accidents
- Idiopathic palmoplantar hidradenitis
- Idiopathic plantar hidradenitis
- Idiopathic pure sudomotor failure
- Idiopathic scrotal calcinosis
- Ifi202
- IgA pemphigus
- Immersion foot syndromes
- Immune thrombocytopenic purpura
- Immunodeficiency with hyper-IgM
- Immunodeficiency with hyperimmunoglobulin M
- Immunodeficiency–centromeric instability–facial anomalies syndrome
- Impetigo herpetiformis
- Inclusion body fibromatosis
- Incontinentia pigmenti
- Indeterminate cell histiocytosis
- Indirect DNA damage
- Induratio penis plastica
- Infantile acne
- Infantile acropustulosis
- Infantile digital fibromatosis
- Infantile digital myofibroblastoma
- Infantile eosinophilic pustular folliculitis
- Infantile hemangioma
- Infantile hemangiopericytoma
- Infantile kaposiform hemangioendothelioma
- Infantile myofibromatosis
- Infantile neuroblastoma
- Infantile postinfectious iris-like purpura and edema
- Infantile systemic hyalinosis
- Infertility in polycystic ovary syndrome
- Inflamed seborrheic keratosis
- Inflammatory angiomatous nodule
- Inflammatory arteriovenous hemangioma
- Inflammatory linear verrucous epidermal nevus
- Inflammatory rosacea
- Infundibular cyst
- Infundibuloma
- Ingrown hair
- Ingrown nail
- Inherited patterned lentiginosis
- Injection site reaction
- Ink spot lentigo
- Interdigitating dendritic cell sarcoma
- Intermediate lichen myxedematosus
- Intermittent hair–follicle dystrophy
- Interstitial granulomatous dermatitis with arthritis
- Interstitial granulomatous drug reaction
- Intertriginous granular parakeratosis
- Intestinal bypass arthritis–dermatitis syndrome
- Intestinal lymphagiectasia–lymphedema–mental retardation syndrome
- Intracartilaginous cyst
- Intractable plantar keratosis
- Intradermal spindle cell lipoma
- Intrahepatic cholestasis of pregnancy
- Intralymphatic lymphomatosis
- Intraoral dental sinus
- Intrauterine epidermal necrosis
- Intravascular lymphomas
- Intravascular lymphomatosis
- Intravascular papillary endothelial hyperplasia
- Intravenous atypical vascular proliferation
- Inverse psoriasis
- Involutional lipoatrophy
- Iododerma
- Iron metallic discoloration
- Ischemic fasciitis
- Ischemic ulcer
- Isolated IgA deficiency
- Isolated dyskeratosis follicularis
- Isolated growth hormone deficiency
- Isolated immunoglobulin A deficiency
- Isolated primary IgM deficiency
- Isolated primary immunoglobulin M deficiency
- Isthmicoma
- Isthmus-catagen cyst
- Itch
- Itchy points
- Itchy red bump disease
- Jacobi ulcer
- Jadassohn–Dosseker syndrome
- Jaffe–Campanacci syndrome
- Janeway lesion
- Janus kinase 3 deficiency
- Jaundice of pregnancy
- Jessner–Kanof lymphocytic infiltration of the skin
- Job syndrome
- Juvenile aponeurotic fibroma
- Juvenile gout
- Juvenile hyaline fibromatosis
- Juvenile idiopathic arthritis
- Juvenile myelomonocytic leukemia
- Juvenile plantar dermatosis
- Juvenile rheumatoid arthritis
- Juvenile systemic hyalinosis
- Juvenile xanthogranuloma
- Kairo cancer
- Kallikrein
- Kang cancer
- Kangri cancer
- Kangri ulcer
- Kasabach–Merritt syndrome
- Kawasaki disease
- Keloid
- Keloid morphea
- Keloidal scar
- Keppen–Lubinsky syndrome
- Keratin cyst
- Keratin disease
- Keratin implantation cyst
- Keratinizing metaplasia
- Keratoacanthoma
- Keratocyst
- Keratoderma
- Keratoderma blennorrhagicum
- Keratoderma blenorrhagicum
- Keratoderma climactericum
- Keratodermia punctata
- Keratoendotheliitis fugax hereditaria
- Keratolysis exfoliativa
- Keratosis
- Keratosis alba
- Keratosis linearis with ichthyosis congenita and sclerosing keratoderma syndrome
- Keratosis pharyngis
- Keratosis pilaris
- Keratosis pilaris atrophicans
- Keratosis punctata
- Keratosis punctata of the palmar creases
- Keratosis spinulosa
- Keratotic pits of the palmar creases
- Kerinokeratosis papulosa
- Kikuchi disease
- Kimura's disease
- Kindler syndrome
- Kinking hair
- Kinky hair disease
- Klein–Waardenburg syndrome
- Knuckle pads
- Koenen's periungual fibroma
- Koenen's tumor
- Koilonychia
- Kraurosis vulvae
- Kyrle disease
- Köbberling–Dunnigan syndrome
- LAMB syndrome
- LIG4 syndrome
- Labial and penile and vulvar melanosis
- Lacquer dermatitis
- Lafora disease
- Lamellar dyshidrosis
- Langerhans cell histiocytosis
- Large plaque parapsoriasis
- Large-cell acanthoma
- Laryngo-onycho-cutaneous syndrome
- Latch (breastfeeding)
- Late onset congenital adrenal hyperplasia
- Late-onset prurigo of pregnancy
- Lateral femoral cutaneous neuropathy
- Laugier–Hunziker syndrome
- Lawrence syndrome
- Lawrence–Seip syndrome
- Lead poisoning
- Ledderhose's disease
- Leiomyoma
- Leiomyomatosis cutis et uteri
- Leiomyosarcoma
- Lelis syndrome
- Lennert lymphoma
- Lenticular atrophia of the palmar creases
- Lentigines neonatorum
- Lentiginosis
- Lentiginosis profusa syndrome
- Lentigo
- Lentigo senilis
- Lentigo simplex
- Leonine facies
- Lesch–Nyhan syndrome
- Lethal midline granuloma
- Letterer–Siwe disease
- Leukemia cutis
- Leukemid
- Leukocyte adhesion molecule deficiency
- Leukocytoclastic vasculitis
- Leukoderma acquisitum centrifugum
- Leukonychia
- Leukopathia symmetrica progressiva
- Leukoplakia
- Leukotriene receptor antagonist-associated Churg–Strauss syndrome
- Levamisole induced necrosis syndrome
- Levator ani syndrome
- Leydig cell tumour
- Lichen aureus
- Lichen myxedematosus
- Lichen nitidus
- Lichen planus
- Lichen planus-like keratosis
- Lichen purpuricus
- Lichen ruber acuminatus
- Lichen ruber moniliformis
- Lichen ruber pilaris
- Lichen simplex chronicus
- Lichen spinulosus
- Lichen striatus
- Lichen verrucosus et reticularis
- Lichenoid actinic keratosis
- Lichenoid drug eruption
- Lichenoid eruption
- Lichenoid trikeratosis
- Lick granuloma
- Limb–mammary syndrome
- Lindsay's nails
- Linea alba (cheek)
- Linea nigra
- Linear IgA bullous dermatosis
- Linear IgM dermatosis of pregnancy
- Linear atrophoderma of Moulin
- Linear epidermal nevus
- Linear focal elastosis
- Linear immunoglobulin A dermatosis
- Linear verrucous epidermal nevus
- Lingua geographica
- Lingua plicata
- Lingua villosa nigra
- Lip sinus
- Lipedematous alopecia
- Lipedematous scalp
- Lipoatrophia annularis
- Lipoatrophia semicircularis
- Lipoblastoma
- Lipoblastomatosis
- Lipodermatosclerosis
- Lipodystrophia centrifugalis abdominalis infantalis
- Lipodystrophy
- Lipofibromatosis
- Lipofibromatosis-like neural tumor
- Lipogranulomatosis
- Lipohypertrophy
- Lipoid proteinosis
- Lipoma
- Lipoma of embryonic fat
- Lipoma of immature adipose tissue
- Lipoprotein lipase deficiency
- Liposarcoma
- Lisch nodule
- Livedo racemosa
- Livedo reticularis
- Livedo reticularis with summer ulceration
- Livedoid dermatitis
- Livedoid vasculitis
- Livedoid vasculopathy
- Liver spot
- Lobular capillary hemangioma
- Localized acquired hypertrichosis
- Localized congenital hypertrichosis
- Localized epidermotropic reticulosis
- Localized granuloma annulare
- Localized heat contact urticaria
- Localized hypertrichosis
- Localized lichen myxedematosus
- Localized lipodystrophy
- Localized nodular tenosynovitis
- Localized pustular psoriasis
- Localized scleroderma
- Longitudinal erythronychia
- Longitudinal melanonychia
- Loop mark
- Loose anagen hair syndrome
- Loose anagen syndrome
- Low-grade fibromyxoid sarcoma
- Low-grade myofibroblastic sarcoma
- Lowry–MacLean syndrome
- Lund and Browder chart
- Lupoid sycosis
- Lupus erythematosus
- Lupus erythematosus panniculitis
- Lupus miliaris disseminatus faciei
- Lupus pernio
- Lycopenemia
- Lyell's syndrome
- Lymphadenosis benigna cutis
- Lymphangiectasia
- Lymphangioma circumscriptum
- Lymphangiomatosis
- Lymphedema praecox
- Lymphedema–distichiasis syndrome
- Lymphocytic infiltrate of Jessner
- Lymphocytoma cutis
- Lymphoepitheliod lymphoma
- Lymphohemangioma
- Lymphomatoid granulomatosis
- Lymphomatoid papulosis
- Löfgren syndrome
- MAGIC syndrome
- MRSA ST398
- Macrocheilia
- Macular granuloma annulare
- Madelung's disease
- Madelung’s disease
- Maffucci syndrome
- Majeed syndrome
- Majocchi's disease
- Majocchi-Schamberg disease
- Mal de Meleda
- Mal perforans
- Malalignment of the nail plate
- Malherbe calcifying epithelioma
- Mali acroangiodermatitis
- Malignant acrospiroma
- Malignant angioendotheliomatosis
- Malignant atrophic papulosis
- Malignant chondroid syringoma
- Malignant endovascular papillary angioendothelioma
- Malignant histiocytosis
- Malignant peripheral nerve sheath tumor
- Malignant pilomatricoma
- Malignant poroma
- Malignant schwannoma
- Malignant trichilemmal cyst
- Mallorca acne
- Malum perforans
- Mammary-type myofibroblastoma
- Mantleoma
- Marfanoid–progeroid–lipodystrophy syndrome
- Margarita photodermatitis
- Marginal zone B-cell lymphoma
- Marie Unna hereditary hypotrichosis
- Marie–Unna hypotrichosis
- Marjolin's ulcer
- Marshall syndrome
- Marshall–White syndrome
- Martorell's ulcer
- Mask of pregnancy
- Maskne
- Masson's hemangio-endotheliome vegetant intravasculaire
- Masson's lesion
- Masson's pseudoangiosarcoma
- Masson's tumor
- Mast cell sarcoma
- Mast cell-dependent urticaria
- Mast cell-independent urticaria
- Mastocytosis
- Maternal autoimmune bullous disease
- Medallion-like purpura
- Median canaliform dystrophy of Heller
- Median nail dystrophy
- Median raphe cyst
- Median rhomboid glossitis
- Medication-induced hyperlipoproteinemia
- Mees' lines
- Meige disease
- Meischer's granuloma
- Melanocytic nevus
- Melanocytic nevus of acral skin
- Melanocytic nevus with intraepidermal ascent of cells
- Melanocytic oral lesion
- Melanocytic tumors of uncertain malignant potential
- Melanocytoma
- Melanodermatitis toxica lichenoides
- Melanoma-associated leukoderma
- Melanonychia
- Melanosis
- Melanosis bulborum and aberrant dermal melanocytosis
- Melanotic macules
- Melasma
- Melkersson–Rosenthal syndrome
- Membranous aplasia cutis
- Menkes disease
- Menkes kinky hair syndrome
- Meralgia paraesthetica
- Meralgia paresthetica
- Mercury granuloma
- Mercury poisoning
- Merkel-cell carcinoma
- Metaphyseal chondrodysplasia Schmid type
- Metastatic calcinosis cutis
- Metastatic carcinoma
- Methicillin-resistant Staphylococcus aureus
- Methotrexate-induced papular eruption
- Metophyma
- Mibelli's angiokeratoma
- Michel aplasia
- Michelin tire baby syndrome
- Microcapillary hemangioma
- Microcystic adnexal carcinoma
- Microcystic lymphatic malformation
- Micropapular tuberculid
- Microscopic polyangiitis
- Microscopic polyarteritis
- Microscopic polyarteritis nodosa
- Microvascular occlusion
- Microvenular hemangioma
- Midline cervical cleft
- Midline mucinosis
- Midline nevus flammeus
- Midline sinus of the upper lip
- Miescher's granuloma of the face
- Mikulicz disease
- Milia en plaque
- Milia-like calcinosis
- Miliaria
- Miliaria crystalline
- Milium (dermatology)
- Milroy's disease
- Minute aggregate keratosis
- Mixed bullous disease
- Mixed connective tissue disease
- Mixed hepatic porphyria
- Mixed porphyria
- Moeller glossitis
- Moll's gland cyst
- Molluscum dermatitis
- Mondor's disease
- Mondor's syndrome of superficial thrombophlebitis
- Mongolian spot
- Monilethrix
- Monosymptomatic hypochondriacal psychosis
- Montgomery syndrome
- Morbihan's disease
- Morgellons
- Morphea
- Morphea en coup de sabre
- Morphea plana atrophica
- Morpheaform basal cell carcinoma
- Morphoeic basal cell carcinoma
- Morsicatio buccarum
- Morvan's disease
- Moschcowitz syndrome
- Mosquito bite allergy
- Moulin atrophoderma linearis
- Mouth and genital ulcers with inflamed cartilage syndrome
- Moynahan syndrome
- Mucha–Habermann disease
- Mucinosis
- Mucinosis follicularis
- Mucinous neoplasm
- Mucinous nevus
- Muckle–Wells syndrome
- Mucocele
- Mucocutaneous lymph node syndrome
- Mucopolysaccharidosis type I
- Mucopolysaccharidosis type I H-S
- Mucopolysaccharidosis type I S
- Mucopolysaccharidosis type IV
- Mucopolysaccharidosis type IX
- Mucopolysaccharidosis type VI
- Mucosal lentigines
- Mucosal melanoma
- Mucosal neuromata with endocrine tumors
- Mucosal squamous cell carcinoma
- Mucous cyst
- Mucous cyst of oral mucosa
- Mucous membrane pemphigoid
- Mucous-membrane pemphigoid
- Muehrcke's lines
- Muehrcke's nails
- Muir–Torre syndrome
- Mukamel syndrome
- Mulberry molar
- Multicentric reticulohistiocytosis
- Multifocal Lymphangioendotheliomatosis with thrombocytopenia
- Multifocal lymphangioendotheliomatosis
- Multilocular bullous fixed drug eruption
- Multinucleate cell angiohistiocytoma
- Multiple cutaneous leiomyoma
- Multiple endocrine neoplasia type 1
- Multiple endocrine neoplasia type 2
- Multiple endocrine neoplasia type 2A
- Multiple endocrine neoplasia type 2B
- Multiple hamartoma syndrome
- Multiple keratoacanthomas of the Ferguson–Smith type
- Multiple leiomyomatosis
- Multiple lentigines syndrome
- Multiple minute digitate hyperkeratosis
- Multiple mucosal neuroma syndrome
- Multiple-type hyperlipoproteinemia
- Munro's microabscess
- Murray–Puretic–Drescher syndrome
- Mushroom worker's disease
- Mycosis fungoides
- Mycosis fungoides palmaris et plantaris
- Myeloperoxidase deficiency
- Myopericytoma
- Myxedema
- Myxofibrosarcoma
- Myxoid cyst
- Myxoid lipoblastoma
- Myxoma of the nerve sheath
- Myxomatous perineurioma
- NAME syndrome
- NERDS syndrome
- NK/T-cell lymphoma
- Nagayama's spots
- Nager acrofacial dysostosis
- Nail biting
- Nail clubbing
- Nail disease
- Nail en raquette
- Nail–patella syndrome
- Napkin psoriasis
- Narcotic dermopathy
- Nasal cerebral heterotopia
- Nasal glioma
- Nasal heterotopic brain tissue
- Nasal-type NK lymphoma
- Nasolacrimal duct cyst
- Necklace of Venus
- Necrobiosis lipoidica
- Necrobiosis lipoidica diabeticorum
- Necrobiotic xanthogranuloma
- Necrobiotic xanthogranuloma with paraproteinemia
- Necrolytic acral erythema
- Necrolytic migratory erythema
- Necrotizing gingivitis
- Necrotizing ulcerative gingivitis
- Necrotizing ulcerative stomatitis
- Neonatal acne
- Neonatal cephalic pustulosis
- Neonatal eosinophilic pustular folliculitis
- Neonatal ichthyosis–sclerosing cholangitis syndrome
- Neonatal pustular eruption
- Neonatal toxic shock-like exanthematous disease
- Neoplasms of the nailbed
- Nephrogenic fibrosing dermopathy
- Nephrogenic systemic fibrosis
- Nerve sheath myxoma
- Netherton syndrome
- Neural fibrolipoma
- Neurilemmoma
- Neurinoma
- Neuro-Behçet's disease
- Neuroblastoma
- Neurodermatitis
- Neuroepithelioma
- Neurofibroma
- Neurofibrosarcoma
- Neurolemmoma
- Neuroma cutis
- Neuropathia mucinosa cutanea
- Neurosarcoma
- Neurothekeoma
- Neurotrophic ulcer
- Neurotropic melanoma
- Neutrophil immunodeficiency syndrome
- Neutrophil-specific granule deficiency
- Neutrophilic dermatosis of the dorsal hands
- Neutrophilic eccrine hidradenitis
- Neutrophilic lobular panniculitis
- Nevi and melanomas
- Nevocellular nevus
- Nevocytic nevus
- Nevoid basal-cell carcinoma syndrome
- Nevoid hypertrichosis
- Nevoid melanoma
- Nevoid melanosis
- Nevoid telangiectasia
- Nevus
- Nevus achromicus
- Nevus anemicus
- Nevus araneus
- Nevus bleu
- Nevus ceruleus
- Nevus comedonicus
- Nevus comedonicus syndrome
- Nevus depigmentosus
- Nevus flammeus
- Nevus flammeus nuchae
- Nevus fuscoceruleus acromiodeltoideus
- Nevus fuscoceruleus ophthalmomaxillaris
- Nevus lipomatosis of Hoffman and Zurhelle
- Nevus lipomatosus superficialis
- Nevus maternus
- Nevus mucinosus
- Nevus of Ito
- Nevus of Ota
- Nevus oligemicus
- Nevus pigmentosus et pilosus
- Nevus psiloliparus
- Nevus sebaceous
- Nevus sebaceous of Jadassohn
- Nevus spilus
- Nevus unius lateris
- Nevus with architectural disorder
- Nezelof syndrome
- Nicolau syndrome
- Nicolau–Balus syndrome
- Nicotine stomatitis
- Niemann–Pick disease
- Nipple bleb
- Nipple pigmentation
- Njølstad syndrome
- Nodular cutaneous elastosis with cysts and comedones
- Nodular fasciitis
- Nodular hidradenoma
- Nodular lichen myxedematosus
- Nodular pattern of cutaneous lymphoid hyperplasia
- Nodular pseudosarcomatous fasciits
- Nodular subepidermal fibrosis
- Nodular vasculitis
- Nodular xanthoma
- Nodulosis–arthropathy–osteolysis syndrome
- Non scarring hair loss
- Non-Langerhans cell histiocytosis
- Non-X histiocytosis
- Non-blanching rash
- Non-mycosis fungoides CD30- pleomorphic small/medium sized cutaneous T-cell lymphoma
- Non-mycosis fungoides CD30− cutaneous large T-cell lymphoma
- Non-mycosis fungoides CD30− pleomorphic small/medium sized cutaneous T-cell lymphoma
- Non-progressive late-onset linear hemifacial lipoatrophy
- Nonspecific cutaneous conditions associated with leukemia
- Nonthrombocytopenic purpura
- Noonan syndrome with multiple lentigines
- Normolipoproteinemic xanthomatosis
- Normophosphatemic familial tumoral calcinosis
- Notalgia paresthetica
- Nuchal keloid acne
- Nutritional deficiency eczema
- O'Brien granuloma
- Obstetric cholestasis
- Obstructive purpura
- Occupational acne
- Occupational skin diseases
- Ochronosis
- Ocular pemphigus
- Ocular rosacea
- Oculo-oral-genital syndrome
- Oculocerebral-hypopigmentation syndrome
- Oculodermal melanocytosis
- Oculomucocutaneous syndrome
- Oculomucodermal melanocytosis
- Odontoonychodermal dysplasia
- Oil acne
- Old age spot
- Omega nails
- Omenn syndrome
- Omphalolith
- Omphalomesenteric duct cyst
- Omphalomesenteric duct remnant
- Onychauxis
- Onychoatrophy
- Onychocryptosis
- Onychogryphosis
- Onycholysis
- Onychomadesis
- Onychomatricoma
- Onychomycosis
- Onychophagia
- Onychophosis
- Onychoptosis defluvium
- Onychorrhexis
- Onychoschizia
- Onychotillomania
- Ophiasis
- Ophthalmia nodosa
- Ophthalmic rosacea
- Ophthalmorosacea
- Oral Crohn's disease
- Oral florid papillomatosis
- Oral hairy leukoplakia
- Oral mucocele
- Oral pigmentation
- Oral submucous fibrosis
- Ordinary urticaria
- Organoid nevus
- Orodynia
- Orofacial granulomatosis
- Orthokeratosis
- Orthostatic purpura
- Osler's disease
- Osler-Weber-Rendu disease
- Osler–Weber–Rendu disease
- Osmidirosis
- Osmidrosis
- Osteoma cutis
- Otophyma
- Ovarian SAHA syndrome
- PAPA syndrome
- PELVIS syndrome
- PHACE syndrome
- PHACES syndrome
- PTC syndrome
- PUPPP syndrome
- PURPLE syndrome
- PUVA keratosis
- PUVA lentigines
- PUVA-induced acrobullous dermatosis
- Pachydermatous eosinophilic dermatitis
- Pachydermodactyly
- Pachyonychia congenita
- Paddy foot
- Paddy-field foot
- Paget's disease of the breast
- Pagetoid reticulosis
- Painful bruising syndrome
- Painful piezogenic pedal papules
- Painful plantar erythema
- Painful purpuric ulcers with reticular pattern of the lower extemities syndrome
- Pale cell acanthoma
- Palisaded encapsulated neuroma
- Palisaded neutrophilic and granulomatous dermatitis
- Pallister–Killian syndrome
- Pallor
- Palmar erythema
- Palmar fibromatosis
- Palmar xanthoma
- Palmoplantar eccrine hidradenitis
- Palmoplantar erythrodysesthesia syndrome
- Palmoplantar hyperhidrosis
- Palmoplantar pustulosis
- Palpable migrating erythema
- Palpable purpura
- Panarteritis nodosa
- Pancreatic fat necrosis
- Panniculitis
- Panniculitis-like T-cell lymphoma
- Paper cut
- Papillary adenoma
- Papillary eccrine adenoma
- Papillary endothelial hyperplasia
- Papillary hidradenoma
- Papillary intralymphatic angioendothelioma
- Papilloma colli
- Papillomatosis
- Papillomatosis cutis carcinoides
- Papillomatosis cutis carcinoides of Gottron–Eisenlohr
- Papillon–Lefèvre syndrome
- Papular and nodular mucinosis in lupus erythematosus
- Papular and nodular mucinosis of Gold
- Papular angioplasia
- Papular dermatitis
- Papular dermatitis of pregnancy
- Papular eruption of blacks
- Papular mucinosis
- Papular mucinosis of infancy
- Papular xanthoma
- Papuloerythroderma of Ofuji
- Papulonodular mucinosis in lupus erythematosus
- Papulopustular
- Papulosquamous disorder
- Paraffinoma
- Parakeratosis pustulosa
- Paraneoplastic acrokeratosis
- Paraneoplastic keratoderma
- Parapsoriasis
- Parapsoriasis acuta
- Parapsoriasis chronica
- Parapsoriasis en plaques
- Parapsoriasis lichenoides chronica
- Parapsoriasis lichenoides et varioliformis acuta
- Parapsoriasis varioliformis
- Paresthesia
- Parkes Weber syndrome
- Paronychia
- Paroxysmal hand hematoma
- Paroxysmal nocturnal hemoglobinuria
- Parry–Romberg syndrome
- Partial albinism with immunodeficiency
- Partial unilateral lentiginosis
- Partington amyloidosis
- Partington cutaneous amyloidosis
- Partington syndrome type II
- Patch-type granuloma annulare
- Pattern hair loss
- Patterned acquired hypertrichosis
- Pauci-immune
- Pearly penile papules
- Peat fire cancer
- Pegum syndrome
- Pellagra-like dermatosis
- Pemphigoid
- Pemphigoid gestationis
- Pemphigoid nodularis
- Pemphigus
- Pemphigus controlled by sulfapyridine
- Pemphigus erythematosus
- Pemphigus foliaceus
- Pemphigus herpetiformis
- Pemphigus vegetans
- Pemphigus vulgaris
- Penile discharge
- Perforating calcific elastosis
- Perforating folliculitis
- Perforating granuloma annulare
- Perforating ulcer of the foot
- Periadenitis mucosa necrotica recurrens
- Periarteritis nodosa
- Perifollicular fibroma
- Perifollicular mucinosis
- Perifolliculitis
- Perifolliculitis capitis abscedens et suffodiens of Hoffman
- Perinatal gangrene of the buttock
- Perinevoid vitiligo
- Periocular dermatitis
- Periodic fever syndrome
- Periodic fever, aphthous stomatitis, pharyngitis and adenitis
- Perioral dermatitis
- Periorbital dermatitis
- Periorbital hyperpigmentation
- Peripheral ameloblastoma
- Peripheral edema
- Periungual fibroma
- Perlèche
- Pernio
- Perniosis
- Persistent acantholytic dermatosis
- Persistent adrenarche syndrome
- Persistent edema of rosacea
- Persistent light reactivity
- Persistent palmoplantar pustulosis
- Petechia
- Peutz–Jeghers syndrome
- Peyronie's disease
- Phagedenic gingivitis
- Phakomatosis
- Phakomatosis pigmentokeratotica
- Phakomatosis pigmentovascularis
- Phenylketonuria
- Pheochromocytoma and amyloid producing medullary thyroid carcinoma
- Phlebectases
- Photoaging
- Photodermatitis
- Photodermatosis
- Photoleukomelanodermatitis of Kobori
- Photosensitive drug reaction
- Photosensitive eczema
- Photosensitivity in humans
- Photosensitivity with HIV infection
- Phototoxic tar dermatitis
- Phylloid hypomelanosis
- Phymatous rosacea
- Physical urticaria
- Phytophotodermatitis
- Phytosterolemia
- Picker's acne
- Piebaldism
- Piezogenic papules
- Pigmentatio reticularis faciei et colli
- Pigmentation disorder
- Pigmented actinic keratosis
- Pigmented hairy epidermal nevus
- Pigmented hairy epidermal nevus syndrome
- Pigmented purpuric dermatosis
- Pigmented purpuric lichenoid dermatitis
- Pigmented purpuric lichenoid dermatitis of Gougerot and Blum
- Pigmented seborrheic keratosis
- Pigmented spindle cell nevus
- Pigmented spindle cell tumor of Reed
- Pigmented variant of Spitz nevus
- Pigmented villonodular synovitis
- Pilar cyst
- Pilar leiomyomas
- Pilar sheath acanthoma
- Pilar tumor
- Pili annulati
- Pili bifurcati
- Pili multigemini
- Pili pseudoannulati
- Pili torti
- Pili trianguli et canaliculi
- Piloleiomyoma
- Pilomatrical carcinoma
- Pilomatricoma
- Pilomatrix carcinoma
- Pilomatrixoma
- Pilonidal sinus
- Pincer nail
- Pinch (action)
- Pinch mark
- Pinkus’ follicular mucinosis
- Pinkus’ follicular mucinosis–benign primary form
- Pitch keratosis
- Pityriasis
- Pityriasis alba
- Pityriasis amiantacea
- Pityriasis lichenoides
- Pityriasis lichenoides chronica
- Pityriasis lichenoides et varioliformis acuta
- Pityriasis rosea
- Pityriasis rosea Gibert
- Pityriasis rubra pilaris
- Plane xanthoma
- Plantar fibromatosis
- Plantar panniculitis
- Plaque-like cutaneous mucinosis
- Plasma cell balanitis
- Plasma cell gingivitis
- Plasma cell orificial mucositi
- Plasma cell vulvitis
- Plasmablastic lymphoma
- Plasmacytoma
- Plasmacytosis
- Plasmoacanthoma
- Platonychia
- Pleomorphic T-cell lymphoma
- Pleomorphic fibroma
- Pleomorphic lipoma
- Plexiform fibrohistiocytic tumor
- Plexiform neurofibroma
- Plica neuropathica
- Plicated tongue
- Plumboporphyria
- Plummer's nail
- Poikiloderma
- Poikiloderma of Civatte
- Poikiloderma vasculare atrophicans
- Poliosis
- Polyarteritis nodosa
- Polycystic ovary syndrome
- Polymorphic eruption of pregnancy
- Polymorphic light eruption
- Polymorphic/malignant midline reticulosis
- Polymorphous light eruption
- Polypoid melanoma
- Pomade acne
- Popsicle panniculitis
- Porcupine man
- Porocarcinoma
- Porokeratotic eccrine ostial and dermal duct nevus
- Poroma
- Porphyria
- Porphyria cutanea tarda
- Port-wine stain
- Post-traumatic punctate intraepidermal hemorrhage
- Postencephalitic trophic ulcer
- Posterior pigmented pruritic patch
- Postinflammatory hypermelanosis
- Postinflammatory hypopigmentation
- Postinflammatory lymphedema
- Postmastectomy lymphangiosarcoma
- Postoperative alopecia
- Postoperative hematoma
- Postpericardiotomy syndrome
- Preauricular appendage
- Preauricular cyst
- Preauricular sinus and cyst
- Preauricular tag
- Pregnancy tumor
- Premycotic phase
- Prepubertal hypertrichosis
- Pressure alopecia
- Pressure ulcer
- Pressure urticaria
- Pressure-induced alopecia
- Pretibial myxedema
- Prickly heat
- Primary Raynaud's phenomenon
- Primary cutaneous adenoid cystic carcinoma
- Primary cutaneous amyloidosis
- Primary cutaneous anaplastic large cell lymphoma
- Primary cutaneous diffuse large B-cell lymphoma, leg type
- Primary cutaneous follicle center lymphoma
- Primary cutaneous immunocytoma
- Primary cutaneous large B-cell lymphoma
- Primary cutaneous marginal zone lymphoma
- Primary lymphedema associated with yellow nails and pleural effusion
- Primary neuroendocrine carcinoma of the skin
- Primary small cell carcinoma of the skin
- Prion pruritus
- Progressive capillary hemangioma
- Progressive cardiomyopathic lentiginosis
- Progressive hemifacial atrophy
- Progressive lipodystrophy
- Progressive macular hypomelanosis
- Progressive nodular histiocytoma
- Progressive nodular histiocytosis
- Progressive pigmentary dermatosis
- Progressive pigmentary dermatosis of Schamberg
- Progressive pigmenting purpura
- Prolactin-induced protein
- Prolidase deficiency
- Proliferating angioendotheliomatosis
- Proliferating epidermoid cyst
- Proliferating epithelial cyst
- Proliferating follicular cystic neoplasm
- Proliferating pilar tumor
- Proliferating trichilemmal cyst
- Proliferating trichilemmal tumor
- Prominent inferior labial artery
- Protein contact dermatitis
- Prurigo
- Prurigo gestationis
- Prurigo gravidarum
- Prurigo nodularis
- Prurigo of pregnancy
- Prurigo pigmentosa
- Prurigo simplex
- Pruritic folliculitis of pregnancy
- Pruritic papular eruption of HIV disease
- Pruritic urticarial papules and plaques of pregnancy
- Pruritus ani
- Pruritus scroti
- Pruritus vulvae
- Pseudo pili annulati
- Pseudo-Kaposi's sarcoma
- Pseudoacanthosis nigricans
- Pseudoainhum
- Pseudoathletic appearance
- Pseudocyst of the auricle
- Pseudoepitheliomatous keratotic and micaceous balanitis
- Pseudofolliculitis barbae
- Pseudoglandular squamous cell carcinoma
- Pseudolymphoma
- Pseudolymphoma of Spiegler and Fendt
- Pseudomamma
- Pseudomelanoma
- Pseudonits
- Pseudopelade of Brocq
- Pseudopelade of the central scalp
- Pseudoporphyria
- Pseudoporphyria cutanea tarda
- Pseudopyogenic granuloma
- Pseudorheumatoid nodule
- Pseudosarcomatous fasciitis
- Pseudoverrucous papules and nodules
- Psoriasis
- Psoriatic erythroderma
- Psoriatic onychodystrophy
- Psychogenic pruritus
- Psychogenic purpura
- Pterygium inversum unguis
- Pterygium inversus unguis
- Pterygium unguis
- Pulling boat hands
- Pulseless disease
- Puncta pruritica
- Punctate hemorrhage
- Punctate keratosis of the palmar creases
- Pure hair-nail type ectodermal dysplasia
- Purine nucleoside phosphorylase deficiency
- Purple glove syndrome
- Purpura annularis telangiectodes
- Purpura annularis telangiectodes of Majocchi
- Purpura en cocarde avec oedema
- Purpura fulminans
- Purpura gangrenosa
- Purpura hyperglobulinemica
- Purpura of the nail bed
- Purpura pigmentosa chronica
- Purpura pigmentosa progressiva
- Purpura rheumatica
- Purpuric agave dermatitis
- Purpuric phototherapy-induced eruption
- Pustular acrodermatitis
- Pustular bacterid
- Pustular drug eruption
- Pustular psoriasis
- Pustular psoriasis of the Barber type
- Pustular psoriasis of the extremities
- Pustular vasculitis of the dorsal hands
- Pustulosis
- Pustulosis of palms and soles
- Pustulosis palmaris et plantaris
- Pyoderma faciale
- Pyoderma fistulans significa
- Pyoderma gangrenosum
- Pyogenic arthritis–pyoderma gangrenosum–acne syndrome
- Pyogenic granuloma
- Pyostomatitis vegetans
- Quadrichrome vitiligo
- Quie syndrome
- Quijilla
- Quincke edema
- Quảng Ngãi skin disease outbreak
- RASopathy
- REM syndrome
- ROSAH syndrome
- Racquet nail
- Racquet thumb
- Ram's horn nails
- Rash
- Rasmussen syndrome
- Raynaud syndrome
- Raynaud's disease
- Razor bumps
- Reactional keratosis
- Reactive neutrophilic dermatoses
- Reactive perforating collagenosis
- Recurrent aphthous stomatitis
- Recurrent focal palmar peeling
- Recurrent intraoral herpes simplex infection
- Recurrent melanocytic nevus
- Recurrent nevus
- Recurrent oral aphthae
- Recurrent palmar peeling
- Recurrent palmoplantar hidradenitis
- Red lunulae
- Red man syndrome
- Red man syndrome (Drug eruption)
- Reed's syndrome
- Referred itch
- Reflex sympathetic dystrophy
- Relapsing febrile non-suppurative panniculitis
- Relapsing polychondritis
- Remnant removal disease
- Renal pruritus
- Reticular dysgenesis
- Reticular erythematous mucinosis
- Reticular pigmented anomaly of the flexures
- Reticulate acropigmentation of Dohi
- Reticulate acropigmentation of Kitamura
- Reticulate pigmentary disorder
- Reticulohistiocytoma
- Reticulohistiocytosis
- Retiform parapsoriasis
- Retiform purpura
- Retinal vasculitis
- Revesz syndrome
- Reye tumor
- Rhagades
- Rheumatoid arthritis
- Rheumatoid neutrophilic dermatitis
- Rheumatoid neutrophilic dermatosis
- Rheumatoid nodulosis
- Rheumatoid vasculitis
- Rhinophyma
- Riehl melanosis
- Riley–Day syndrome
- Ringed hair
- Road rash
- Rodent mite dermatitis
- Rosacea
- Rosacea conglobata
- Rosacea fulminans
- Rosacea-like tuberculid of Lewandowsky
- Rosaceous lymphedema
- Rosai–Dorfman disease
- Rosenthal–Kloepfer syndrome
- Ross' syndrome
- Rothmund–Thomson syndrome
- Roth–Bernhardt disease
- Rowell's syndrome
- Rubinstein–Taybi syndrome
- Rud syndrome
- Rudimentary meningocele
- Rudimentary polydactyly
- Runner's rump
- SACRAL syndrome
- SAHA syndrome
- SAPHO syndrome
- SCORAD
- Sabinas brittle hair syndrome
- Salmon patch
- Sandpapered nails
- Sarcoidosis
- Sarcoidosis of Spiegler and Fendt
- Sari cancer
- Scalp dysesthesia
- Scalp pruritus
- Scar
- Scarring hair loss
- Scarring pemphigoid
- Scarring pseudofolliculitis of the beard
- Schamberg disease
- Schamberg's purpura
- Schimmelpenning syndrome
- Schimmelpenning–Feuerstein–Mims syndrome
- Schnitzler syndrome
- Schwann cell tumor
- Schwannoma
- Schönlein–Henoch purpura
- Schöpf–Schulz–Passarge syndrome
- Scleredema
- Scleredema adultorum
- Scleredema adultorum of Buschke
- Scleredema diabeticorum
- Scleredema of Buschke
- Sclerema neonatorum
- Sclerodactyly
- Scleroderma
- Scleroderma-like reaction to taxanes
- Sclerodermoid lichen myxedematosus
- Scleromyxedema
- Sclerosing epithelioid fibrosarcoma
- Sclerosing hemangioma
- Sclerosing lymphangitis
- Sclerosing panniculitis
- Sclerosing sweat duct carcinoma
- Sclerotic fibroma
- Sclérodermie atrophique d'emblée
- Scratch dermatitis
- Scrotal tongue
- Scrotodynia
- Sea-blue histiocytosis
- Sebaceoma
- Sebaceous adenoma
- Sebaceous carcinoma
- Sebaceous cyst
- Sebaceous epithelioma
- Sebaceous hyperplasia
- Sebaceous nevus syndrome
- Seboacanthoma
- Sebocystomatosis
- Seborrheic keratosis
- Seborrheic verruca
- Seborrheic-like psoriasis
- Seborrhoea–acne–hirsutism–alopecia
- Secondary cutaneous CD30+ large-cell lymphoma
- Secondary cutaneous amyloidosis
- Secondary lymphedema
- Secondary systemic amyloidosis
- Secretory carcinoma
- Segmental hyalinizing vasculitis
- Segmental lentiginosis
- Segmental vitiligo
- Seidlmayer syndrome
- Selective immunoglobulin A deficiency
- Self-healing juvenile cutaneous mucinosis
- Self-healing papular mucinosis
- Semicircular lipoatrophy
- Senear–Usher syndrome
- Senile angioma
- Senile freckle
- Senile keratosis
- Senile pruritus
- Senile purpura
- Senile wart
- Senter syndrome
- Septal panniculitis
- Septic thrombophlebitis
- Serraro
- Serrated seborrheic keratosis
- Sertoli cell tumour
- Sertoli–Leydig cell tumour
- Serum sickness-like reaction
- Setleis syndrome
- Severe combined immunodeficiency
- Severe cutaneous adverse reactions
- Severe mixed immunodeficiency syndrome
- Sex-linked agammaglobulinemia
- Shagreen patch
- Shah–Waardenburg syndrome
- Sharp's syndrome
- Shave bumps
- Shawl scrotum
- Shell nail syndrome
- Shiitake mushroom dermatitis
- Shiitake-induced toxicoderma
- Shin spots
- Short anagen syndrome
- Short-limb skeletal dysplasia with severe combined immunodeficiency
- Shulman's syndrome
- Shwachman–Diamond syndrome
- Sialidosis
- Sicca syndrome
- Silica granuloma
- Silicone granuloma
- Silicosis
- Simple lentigo
- Simple sebaceous duct cyst
- Sinus histiocytosis with massive lymphadenopathy
- Sinus pericranii
- Sinusoidal hemangioma
- Sipple syndrome
- Sitosterolemia
- Sjögren syndrome
- Sjögren–Larsson syndrome
- Skin Cancer Foundation
- Skin Cancer: Recognition and Management
- Skin and skin structure infection
- Skin cancer
- Skin cancer in Australia
- Skin cancer in cats and dogs
- Skin cancer in horses
- Skin condition
- Skin conditions in instrumental musicians
- Skin dimple
- Skin fissure
- Skin fossa
- Skin fragility-woolly hair-palmoplantar keratoderma syndrome
- Skin infection
- Skin maceration
- Skin manifestations of sarcoidosis
- Skin tag
- Skin track
- Sly syndrome
- Small plaque parapsoriasis
- Small-cell melanoma
- Smoker's keratosis
- Smoker's patches
- Sneddon's syndrome
- Soft fibroma
- Solar erythema
- Solar keratosis
- Solar lentigo
- Solar purpura
- Solar urticaria
- Solenonychia
- Solid facial edema
- Solid glomus tumor
- Solid seborrheic keratosis
- Solitary congenital nodular calcification
- Solitary cutaneous leiomyoma
- Solitary glomus tumor
- Solitary mastocytoma
- Solitary nerve sheath tumor
- Solitary reticulohistiocytoma
- Solitary reticulohistiocytosis
- Solitary steatocystoma
- Solitary trichoepithelioma
- Solomon's syndrome
- Soot tattoo
- South African genetic porphyria
- South African porphyria
- Spangler's papular dermatitis of pregnancy
- Speckled lentiginous nevus
- Spectacle frame acanthoma
- Spider angioma
- Spider nevus
- Spider telangiectasia
- Spiegler–Fendt lymphoid hyperplasia
- Spiegler–Fendt sarcoid
- Spina bifida
- Spindle cell hemangioma
- Spindle cell lipoma
- Spindled melanoma
- Spiradenocarcinoma
- Spiradenoma
- Spitz nevus
- Spitz's juvenile melanoma
- Splinter hemorrhage
- Spoon nails
- Sporadic neurofibroma
- Spotted lunulae
- Spun-glass hair
- Squamous cell carcinoma in situ
- Staining of the nail plate
- Stasis blister
- Stasis dermatitis
- Stasis panniculitis
- Stasis papillomatosis
- Stasis purpura
- Steatocystoma multiplex
- Steatocystoma simplex
- Sternomastoid tumor of infancy
- Steroid acne
- Steroid folliculitis
- Steroid rosacea
- Steroid-induced skin atrophy
- Stevens–Johnson syndrome
- Stewart–Treves syndrome
- Sticky skin syndrome
- Stiff skin syndrome
- Still's disease
- Stippled nails
- Stomatitis areata migrans
- Stomatitis nicotina
- Stork bite
- Strawberry hemangioma
- Strawberry nevus
- Stretch marks
- Striae atrophicans
- Striate keratoderma
- Sturge–Weber syndrome
- Subacute cutaneous lupus erythematosus
- Subacute migratory panniculitis of Vilanova and Piñol
- Subacute nodular migratory panniculitis
- Subcutaneous T-cell lymphoma
- Subcutaneous abscess
- Subcutaneous emphysema
- Subcutaneous fat necrosis
- Subcutaneous fat necrosis of the newborn
- Subcutaneous granuloma annulare
- Subcutaneous lupus erythematosus
- Subcutaneous pseudosarcomatous fibromatosis
- Subepidermal calcified nodule
- Subscapular pruritus
- Subungual exostosis
- Subungual hematoma
- Subungual keratoacanthoma
- Sucking blister
- Sudamina
- Sudoriferous cyst
- Sukhapakla
- Sulfonamide hypersensitivity syndrome
- Sulzberger–Garbe syndrome
- Sunburn lentigo
- Superficial acral fibromyxoma
- Superficial granulomatous pyoderma
- Superficial gyrate erythema
- Superficial multicentric basal cell carcinoma
- Superficial thrombophlebitis
- Superficial vein thrombosis
- Supernumerary nipple
- Surfer's knots
- Sutton nevus
- Sweat allergy
- Sweet's syndrome-like dermatosis
- Symmetrical dyschromatosis of the extremities
- Synovitis–acne–pustulosis–hyperostosis–osteomyelitis syndrome
- Syringadenoma papilliferum
- Syringocystadenoma papilliferum
- Syringofibroadenoma
- Syringoid carcinoma
- Syringoma
- Syringomyelia
- Systematized epidermal nevus
- Systematized verrucous nevus
- Systemic chondromalacia
- Systemic sarcoidosis
- Systemic scleroderma
- Systemic vasculitis
- Systemic-onset juvenile idiopathic arthritis
- Sézary disease
- T cell deficiency
- TAN syndrome
- TNF receptor associated periodic syndrome
- Takahara's disease
- Takayasu's arteritis
- Talon noir
- Tangier disease
- Tar acne
- Tar keratosis
- Tar melanosis
- Tar wart
- Target lesion
- Targetoid hemosiderotic hemangioma
- Tattoo
- Telangiectasia
- Telangiectasia macularis eruptiva perstans
- Telangiectatic warts
- Telogen effluvium
- Templeton skin tag
- Temporal alopecia
- Temporal arteritis
- Temporal triangular alopecia
- Tendinous xanthoma
- Tenosynovial giant cell tumor
- Teratoma
- Terry's nails
- Tetter
- Texier's disease
- Thermal keratosis
- Thermal trauma
- Thromboangiitis obliterans
- Thrombocytopenic purpura
- Thrombotic thrombocytopenic purpura
- Thymic alymphoplasia
- Thymic dysplasia with normal immunoglobulins
- Thymic hypoplasia
- Thymoma with immunodeficiency
- Thyroglossal cyst
- Tic douloureux
- Tietz syndrome
- Tinea amiantacea
- Tinea versicolor
- Titanium metallic discoloration
- Toasted skin syndrome
- Topical steroid withdrawal
- Torus palatinus
- Toxemic rash of pregnancy
- Toxic epidermal necrolysis
- Toxic erythema of pregnancy
- Toxic erythema of the newborn
- Toxic oil syndrome
- Toxic pustuloderma
- Trabecular carcinoma of the skin
- Trachonychia
- Trachyonychia
- Traction alopecia
- Transient acantholytic dermatosis
- Transient erythroporphyria of infancy
- Transient hypogammaglobulinemia of infancy
- Transient lingual papillitis
- Transient neonatal pustular melanosis
- Transient neonatal pustulosis
- Transitory benign plaques of the tongue
- Transverse melanonychia
- Traumatic alopecia
- Traumatic anserine folliculosis
- Traumatic asphyxia
- Traumatic auricular hematoma
- Traumatic calcinosis cutis
- Traumatic eosinophilic granuloma
- Traumatic neuroma
- Traumatic purpura
- Treacher Collins syndrome
- Trench foot
- Trench mouth
- Triangular alopecia
- Trichilemmal carcinoma
- Trichilemmoma
- Trichoadenoma
- Trichoadenoma of Nikolowski
- Trichobacteriosis axillaris
- Trichoblastic fibroma
- Trichoblastoma
- Trichodiscoma
- Trichoepithelioma
- Trichofolliculoma
- Trichomegaly
- Trichorrhexis invaginata
- Trichorrhexis nodosa
- Trichostasis spinulosa
- Trichotillomania
- Trichotillosis
- Trichrome vitiligo
- Trigeminal neuralgia
- Trigeminal trophic syndrome
- Tripe palms
- Trophic ulcer
- Tropical acne
- Trumpet nails
- Trumpeter's wart
- Tscherne classification
- Tuberoeruptive xanthoma
- Tuberous xanthoma
- Tubular apocrine adenoma
- Tufted angioma
- Tufted folliculitis
- Tufted hemangioma
- Tulip fingers
- Tumid lupus erythematosus
- Tumor alopecia
- Tumor lysis syndrome
- Tumor necrosis factor receptor associated periodic syndrome
- Tumor of pregnancy
- Tumor of the follicular infundibulum
- Twisted hairs
- Two feet-one hand syndrome
- Tycoon's cap
- Tyloma
- UV-sensitive syndrome
- Ulcerative gingivitis
- Ullrich disease
- Umbilical granuloma
- Uncombable hair syndrome
- Undifferentiated connective tissue disease
- Undifferentiated pleomorphic sarcoma
- Unguis incarnatus
- Unilateral nevoid telangiectasia
- Unilateral palmoplantar verrucous nevus
- Unilesional mycosis fungoides
- Universal angiomatosis
- Unusual lupus-like syndrome
- Upshaw–Schulman syndrome
- Uranium dermatosis
- Urate crystal arthropathy
- Urate deposition disease
- Urbach–Wiethe disease
- Uremic frost
- Uremic pruritus
- Urethral caruncle
- Urticaria pigmentosa
- Urticaria-like follicular mucinosis
- Urticarial allergic eruption
- Urticarial dermatoses
- Urticarial erythema multiforme
- Urticarial syndromes
- Urticarial vasculitis
- VEXAS syndrome
- Vagabond's leukomelanoderma
- Vaginal melanoma
- Van Lohuizen syndrome
- Varicose eczema
- Variegate porphyria
- Vascular leiomyoma
- Vascular rosacea
- Vascular spider
- Vasculitis
- Vasospastic macule
- Vellus hamartoma
- Venous lake
- Venous ulcer
- Ventral pterygium
- Verneuil's disease
- Verrucae palmares et plantares
- Verruciform xanthoma
- Verrucous carcinoma
- Verrucous cyst
- Verrucous epidermal nevus
- Verrucous lupus erythematosus
- Verrucous perforating collagenoma
- Verrucous seborrheic keratosis
- Vesicopustular dermatosis
- Vesicular pemphigoid
- Vesiculobullous disease
- Vesiculopustular eruption and leukemoid reaction in Down syndrome
- Vestibular papillomatosis
- Vestibulodynia
- Vibration white finger
- Vibratory angioedema
- Vincent gingivitis
- Vincent infection
- Vincent stomatitis
- Vincent's disease
- Viral keratosis
- Vitamin K reaction
- Vitelline cyst
- Vitiligo
- Vitiligo ponctué
- Vogt–Koyanagi–Harada disease
- Vulvar childhood pemphigoid
- Vulvitis circumscripta plasmacellularis
- Vulvodynia
- WHIM syndrome
- Waardenburg Syndrome Type 2D
- Waardenburg syndrome
- Wagenmann–Froboese syndrome
- Waldenström hyperglobulinemic purpura
- Waldenström macroglobulinemia
- Wallace rule of nines
- Warfarin blue toe syndrome
- Warfarin necrosis
- Wart
- Warts–hypogammaglobulinemia–infections–myelokathexis syndrome
- Warty dyskeratoma
- Watch-glass nails
- Waterlow score
- Wattle (dermatology)
- Waxy keratosis of childhood
- Waxy skin
- Weary–Kindler syndrome
- Weathering nodule of ear
- Weber–Christian disease
- Wells' syndrome
- Wende–Bauckus syndrome
- Werlhof's disease
- Wermer syndrome
- Westerhof syndrome
- White nails
- White sponge nevus
- White sponge nevus of Cannon
- Whitlow
- Winchester syndrome
- Winer's nodular calcinosis
- Wiskott–Aldrich syndrome
- Woolf syndrome
- Woolly hair nevus
- Woringer–Kolopp disease
- Woronoff's ring
- Wrestler's ear
- Wyburn–Mason syndrome
- X-linked agammaglobulinemia
- X-linked hypertrichosis
- X-linked hypogammaglobulinemia
- X-linked lymphoproliferative disease
- X-linked neutropenia
- X-linked reticulate pigmentary disorder
- X-linked reticulate pigmentary disorder with systemic manifestations
- X-type histiocytosis
- Xanthelasma
- Xanthelasma palpebrarum
- Xanthoma
- Xanthoma diabeticorum
- Xanthoma disseminatum
- Xanthoma planum
- Xanthoma striatum palmare
- Xanthoma tendinosum
- Xanthoma tuberosum
- Xanthomatosis
- Xanthomatous biliary cirrhosis
- Xerotic eczema
- Yao syndrome
- Yellow nail syndrome
- Yemenite deaf-blind hypopigmentation syndrome
- Yoruba tribal marks
- Ziprkowski–Margolis syndrome
- Zirconium granuloma
- Zoon's balanitis
- Zoon's erythroplasia
- Zoon's vulvitis
- Zosteriform lentiginous nevus
- Zosteriform metastasis
- Zosteriform speckled lentiginous nevus
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