What should you know about DermNet NZ granuloma annulare?

The bumps are usually firm, smooth, and arranged in a circle or arc. They can appear on the backs of the hands or feet, over joints, or elsewhere on the skin. Unlike an infection, granuloma annulare does not spread to other people. The surface may look close to normal because scaling is not usually the main feature. Some patches settle on their own, while others remain visible or return after improving.

Arrange a skin assessment if the diagnosis is uncertain, the patch is changing, or several areas are appearing. A clinician may recognise the pattern by examining the skin and may sometimes suggest a small biopsy when another condition needs excluding. Treatment depends on location, extent, symptoms, and your preference. Options can include a prescribed cream such as [Topical Corticosteroids](/treatments/medical-dermatology/topical-corticosteroids/) or an [Steroid Injection Into The Skin](/treatments/injectables/intralesional-steroid-injection/) for selected lesions. Avoid scratching and protect exposed skin from irritation.

Seek a prompt review if a patch becomes painful, hot, rapidly swollen, open, or drains fluid. Arrange an appointment if the appearance is spreading, the skin is persistently itchy, or the change is affecting daily activities. A new ring-shaped mark can have several causes, so examination is useful before applying treatment intended for a different rash.

Could this be granuloma annulare or another ring-shaped rash? Would a biopsy clarify the diagnosis? Is observation reasonable for this location? If treatment is advised, how should I use the cream or what should I expect after an injection?