Granuloma annulare
From Wikipedia, the free encyclopedia
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| Granuloma annulare on hand | |
| ICD-10 | L92.0 |
Granuloma annulare is a chronic skin disease consisting of a rash with reddish bumps arranged in a circle or ring. It most often affects children and young adults and it is slightly more common in females. The condition is usually seen in otherwise healthy people. Occasionally, it may be associated with diabetes or thyroid disease. Its cause is unknown.
Granuloma annulare is usually asymptomatic, but the rash may be slightly itchy. Patients usually notice a ring of small, firm bumps (papules) over the backs of the forearms, hands or feet. The bumps are caused by the clustering of T Cells below the skin. Occasionally, multiple rings may be found. Rarely, granuloma annulare may appear as a firm nodule under the skin of the arms or legs.
Because granuloma annulare is usually asymptomatic, treatment may not be necessary except for cosmetic reasons. Most lesions of granuloma annulare disappear with no treatment within two years. Sometimes, however, the rings can remain for many years. The appearance of new rings years later is not uncommon.
