Patch-type granuloma annulare
| Patch-type granuloma annulare | |
|---|---|
| Synonyms | |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Skin lesions, rash |
| Complications | |
| Onset | |
| Duration | |
| Types | N/A |
| Causes | Unknown |
| Risks | |
| Diagnosis | Clinical diagnosis, skin biopsy |
| Differential diagnosis | Tinea corporis, Erythema annulare centrifugum, Necrobiosis lipoidica |
| Prevention | |
| Treatment | Topical corticosteroids, cryotherapy, phototherapy |
| Medication | |
| Prognosis | Generally good |
| Frequency | Rare |
| Deaths | N/A |
Patch-type granuloma annulare is a skin condition characterized by red or skin-colored patches that are typically found on the extremities, trunk, or face. It is a rare variant of granuloma annulare, a chronic skin condition that causes raised, reddish or skin-colored bumps (lesions) in a ring pattern, usually on the hands and feet.
Signs and Symptoms[edit | edit source]
Patch-type granuloma annulare typically presents as asymptomatic, annular, or arcuate plaques. The plaques are usually skin-colored to erythematous and are most commonly located on the extremities, trunk, or face. The condition is often mistaken for tinea corporis or eczema due to its similar appearance.
Causes[edit | edit source]
The exact cause of patch-type granuloma annulare is unknown. However, it is believed to be an immune response to a variety of triggers, such as infections, minor injuries, or insect bites. Some studies suggest a possible association with diabetes mellitus, but this link is not well established.
Diagnosis[edit | edit source]
Diagnosis of patch-type granuloma annulare is typically made based on the clinical appearance of the skin lesions. A skin biopsy may be performed to confirm the diagnosis. The histologic findings are similar to those of other forms of granuloma annulare, with the presence of palisaded granulomas and collagen degeneration.
Treatment[edit | edit source]
Treatment for patch-type granuloma annulare is often unnecessary as the condition is usually self-limiting and resolves without treatment. However, in some cases, treatment may be recommended to improve the appearance of the skin lesions. Treatment options include topical corticosteroids, light therapy, and oral medications.
See Also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD
