Picture of Granuloma Annulare
Granuloma annulare is a chronic skin condition that consists of a circular-shaped rash with reddish bumps (papules). People who have granuloma annulare usually notice one or more rings of small, firm bumps over the backs of their forearms, hands, or feet. The rash may be mildly itchy. It's not known what causes it and they usually go away on their own, although steroids may be prescribed. The condition most often affects children and young adults and is slightly more common in girls.
Text Source: National Organization for Rare Disorders