What should you know about show me ringworm?

A patch may begin as a small itchy area and gradually spread outward, leaving clearer skin toward the centre. Its edge can be raised, dry, or more visibly scaly than the middle. The appearance varies by body site and skin tone, so not every fungal rash forms a perfect ring. Similar-looking problems include eczema and other causes of skin rash. Ringworm can affect the body, scalp, feet, or groin, and it may pass through close skin contact or shared towels, clothing, and sports equipment.

Keep the area clean and dry, wash hands after touching it, and avoid sharing towels, clothing, hairbrushes, or equipment. A pharmacist or clinician can help choose a topical antifungal treatment for suitable skin infections; treatment should be used for the full advised course even if the patch starts settling. Scalp involvement, extensive patches, or infection that does not improve may need oral antifungal treatment. Do not apply steroid cream alone to an undiagnosed ring-shaped rash because it can change the appearance and allow fungus to spread.

Arrange an assessment if the rash is spreading, involves the scalp or nails, is painful, oozing, very inflamed, or keeps returning. Seek prompt care for rapidly worsening redness, marked swelling, fever, or feeling unwell. A clinician may examine the scale or take a sample when the diagnosis is uncertain, especially before recommending treatment for a child, pregnancy, or a person with a weakened immune system.

Could this be ringworm or another cause of skin rash? Which treatment suits the body site, and how long should I use it? Could anyone I live with or a household pet need assessment?