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. Granuloma annulare often causes a slightly raised patch on your skin that has a noticeable (and sometimes scaly) border.
Most people have one or a few patches on their skin. It’s also possible to have patches that cover a large amount of your body. Granuloma annulare can also cause a deep, round lump in the skin.
If you have a patch of granuloma annulare on your skin, it can be mistaken for another skin condition called ringworm. The two skin conditions look similar.
You can get an accurate diagnosis by seeing our board-certified dermatologists. If the diagnosis is granuloma annulare, you may not have to treat it. Granuloma annulare tends to go away on its own without treatment.