Ringworm affected area of the skin: what to know

Ringworm is a fungal infection in the outer skin. It may begin as a small itchy or scaly patch and gradually extend at the edge. The centre can look less active while the border remains raised or flaky, but not every infection forms a perfect ring. On darker skin, the patch may look brown, purple, grey, or darker than nearby skin rather than bright red. Feet, groin, body skin, scalp, and nails can behave differently, so location helps guide diagnosis and treatment.

Wash gently, dry thoroughly, and keep clothing loose enough to reduce rubbing. Use only an antifungal product suitable for the affected body site and follow the label or clinician’s instructions. Do not share towels, clothing, bedding, shoes, brushes, or sports equipment. Launder items that touch the area, and wash hands after applying medicine. Avoid steroid cream alone on a suspected fungal rash because it may change the appearance and allow the infection to persist. Do not scratch or peel scale.

Arrange medical advice if the area continues to expand, keeps returning, or fails to improve with directed treatment. Seek prompt care for severe pain, pus, spreading warmth, marked swelling, fever, or a rapidly changing rash. Get an examination sooner when the affected site is the scalp, nails, face near the eye, or a sensitive body fold, since these areas may need different treatment and monitoring.

Ask whether the location and border fit ringworm, which treatment form is appropriate, how long to use it, whether another site or household contact needs checking, and how to recognise healing versus persistent infection.