Jan 21 2009
Granuloma Annulare
The cause of granuloma annulare (GA) is not known. Skin lesions can follow an insect bite, sun exposure, a viral infection, or can appear at the site of a trauma. Children and young adults are most commonly affected.
Lesions of GA begin as smooth, flesh-colored or pink bumps on the skin that slowly expand, often forming a ring of bumps with central clearing in an oval or irregular shaped pattern. There may not be only a single lesion or many lesions. GA can be found on any part of the body and does not usually itch or hurt.
There is also a deeper form of GA called subcutaneous granuloma annulare. These lesions are also harmless but can form deep lumps beneath the skin especially on the lower legs and arms.
The lesions of GA most often disappear in several months to years without any treatment. It is not contagious. Sometimes topical steroid preparations are prescribed. Recurrence occasionally occurs, often at the original site. Reassurance that all lesions will eventually resolve is important.
