How long does oral antifungal treatment take to work for ringworm?

Ringworm is a fungal infection that can form an expanding, scaly edge on the body. Less itch, reduced scaling, and a border that stops enlarging suggest progress. The centre may remain discoloured after the fungus is controlled. Ringworm on the scalp, beard area, or nails behaves differently from a small patch on the body and may need a tailored course, so describe every affected site to the clinician.

Follow the prescribed schedule and finish the course. Keep the area clean and dry, wash hands after touching it, avoid sharing towels or clothing, and wash sportswear regularly. Keep pets away from close contact until a suspected animal source has been assessed. Do not cover the rash with steroid cream unless instructed. Find treatment information in [Oral Antifungal Treatment](/treatments/medical-dermatology/oral-antifungal-therapy/).

Arrange prompt review for scalp or beard involvement, pus, marked swelling, fever, severe pain, or quickly spreading redness. Seek urgent help for breathing difficulty, facial swelling, or extensive blistering after a dose. Contact the clinician if the patch keeps enlarging, new patches appear, or improvement is absent after the planned treatment.

Ask whether the infection site changes the treatment duration, when you can return to close-contact activities, whether household members or pets need checking, and what to do about a missed dose.