Granuloma annulare is a skin condition that usually causes a rash. It isn’t a type of cancer. It isn’t contagious.
It rarely causes symptoms, such as pain or itch, but it can show up on your skin in different ways.
What appears on your skin depends on the type of granuloma annulare you have. The most common type causes a slightly raised patch that is ringed by a noticeable border. This patch tends to form on a hand, arm, foot, or leg, but it can appear anywhere on the skin.