Pigmented purpuric dermatosis
Alternate names[edit | edit source]
Schamberg disease; Familial pigmented purpuric eruption; Schamberg purpura; Pigmented purpura; Progressive pigmented purpura; Pigmented purpuric eruption
Definition[edit | edit source]
Pigmented purpuric dermatosis is a chronic condition characterized by reddish-brown skin lesions caused by leaky capillaries.
Epidemiology[edit | edit source]
- Pigmented purpuric dermatoses are rare.
- There is not a racial predilection; although, they appear slightly more often in males.
- Children can also be affected.[1][1].
Cause[edit | edit source]
- The cause of pigmented purpuric dermatosis is unknown.
- Occasionally, it occurs as a reaction to a medication, food additive, viral infection or following exercise.
- In rare cases, there appears to be a genetic component.
Signs and symptoms[edit | edit source]
- The main features of pigmented purpuric dermatosis (PPD) are petechiae (tiny red spots due to broken blood vessels) or purpura (purple-colored spots or patches due to broken blood vessels), and yellow to brown pigmented patches.
- The most common sites are the legs, although lesions also may develop in other areas.
- Infrequently, PPD manifests as a generalized rash.
- The palms of the hands, soles of the feet, genitalia, and mucosa typically are not affected.
- Depending on the type of PPD a person has, additional signs and symptoms may include red-brown patches, plaques, linear lesions, itching, and/or other features.
- In general, PPD does not cause serious health problems but is a chronic condition.
- Signs and symptoms may persist, wax and wane, or slowly progress, and may go away over a period of months to years.
Diagnosis[edit | edit source]
- Pigmented purpuric dermatoses are largely diagnosed based on the clinical presentation.
- However, with atypical presentations or to rule out cutaneous vasculitis, dermatitis, or cutaneous t-cell lymphoma, skin biopsy by punch technique can be helpful. CBC and coagulation studies can be performed to rule out thrombocytopenia or clotting disorders.
- Medication history should also be obtained to screen for drug hypersensitivity as a cause.
- To rule out concomitant allergic contact dermatitis, patch testing can be performed.[2][2].
Treatment[edit | edit source]
- If the condition is mild, treatment may not be necessary.
- For those who suffer from itching, topical steroids and antihistamines may be useful.
- Compression stockings may be used if the lower legs are affected.
- Additional treatments that have been successful in limited studies include pentoxifylline, aminaphtone, photochemotherapy (PUVA), griseofulvin, oral cyclosporin, and ascorbic acid with rutoside.
References[edit | edit source]
- ↑ Tolaymat L, Hall MR. Pigmented Purpuric Dermatitis. [Updated 2020 Dec 13]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK519562/
- ↑ Tolaymat L, Hall MR. Pigmented Purpuric Dermatitis. [Updated 2020 Dec 13]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK519562/
NIH genetic and rare disease info[edit source]
Pigmented purpuric dermatosis is a rare disease.
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