Granuloma annulare is a skin condition that causes skin-colored or reddish lesions in patterns typically on the hands and feet, indicates Mayo Clinic. Lesions usually disappear on their own without itching or pain. The causes of granuloma annular are unknown.
The symptoms of granuloma annulare depend on if it appears in a localized, generalized or subcutaneous state, explains Mayo Clinic. The most common type of this condition appears in a localized state in a circular shape on the feet, hands, ankles and wrists. Granuloma annulare in the generalized variety appears over a large portion of the body and is often itchy. Granuloma annulare in subcutaneous form typically appears in small children and appears as a lump under the skin instead of a rash.
No treatment is typically necessary for granuloma annulare, but corticosteroid products and injections can help with the appearance and treat severe symptoms, states Mayo Clinic. Liquid nitrogen can remove lesions, and light therapy also works. Oral medications treat severe cases and prevent immune system reactions in certain people. Doctors typically diagnose granuloma annulare by examination, and they sometimes use a biopsy to confirm the diagnosis. Numerous or generalized lesions are sometimes associated with thyroid disease or diabetes.