Dr. Abdulaziz AlRashed — Consultant Dermatologist, Cosmetic & Laser
Ringworm (Tinea Corporis / Cruris) Advice
A patient advice sheet — 7 practical points. Reviewed and updated by Dr. Abdulaziz AlRashed, July 2026.
Last reviewed: July 2026
The advice
- Ringworm is a fungal infection spread by contact (people, pets, shared towels) and thrives on sweat and skin folds.
- Apply the antifungal cream twice daily, covering 2 cm of normal skin beyond the edge, and continue for two weeks after the rash clears.
- Important warning: do NOT use cortisone creams or mixed creams (cortisone + antifungal) on it — they mask the rash, spread the infection and make treatment harder.
- Wash towels and clothing in hot water, never share towels, dry skin folds well, and wear loose cotton underwear.
- Treat athlete's foot at the same time if present — it is a common source of groin infection.
- Check family members and pets for scaly patches and treat them.
- Widespread infection, or involvement of the scalp or nails, needs oral treatment from your doctor.
See also the full treatment page: Tinea versicolor treatment — options, evidence and expected timelines.
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