Patch-type granuloma annulare
Patch-type granuloma annulare
Patch-type granuloma annulare (pronunciation: patch-type gran-u-lo-ma an-nu-lare) is a rare form of granuloma annulare, a chronic skin condition characterized by raised, reddish or skin-colored bumps (lesions) that may form ring patterns.
Etymology
The term "granuloma" originates from the Latin word "granulum", meaning "small grain", and "annulare" from the Latin "annulus", meaning "ring". The "patch-type" descriptor is used to differentiate this variant from other forms of granuloma annulare, as it presents as larger, patch-like lesions.
Symptoms
Patch-type granuloma annulare typically presents as large, annular, erythematous patches. These patches are often found on the extremities, trunk, or neck. Unlike other forms of granuloma annulare, the patch-type variant does not typically form ring-shaped lesions.
Causes
The exact cause of patch-type granuloma annulare is unknown. However, it is believed to be an immune response to a variety of triggers, including minor skin injuries, insect bites, or certain medications. It is not contagious.
Diagnosis
Diagnosis of patch-type granuloma annulare is typically made through a combination of clinical examination and skin biopsy. The condition is often mistaken for other skin disorders, such as tinea corporis or eczema, due to its similar appearance.
Treatment
Treatment for patch-type granuloma annulare is often unnecessary, as the condition is usually self-limiting and resolves without intervention. However, in cases where the lesions are symptomatic or cosmetically concerning, treatment options may include topical corticosteroids, light therapy, or oral medications.
Related Terms
External links
- Medical encyclopedia article on Patch-type granuloma annulare
- Wikipedia's article - Patch-type granuloma annulare
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