Is ringworm contagious?
Last updated September 3, 2026.
Yes - ringworm is quite contagious, and it is a fungus, not a worm. Per the CDC it spreads through skin-to-skin contact with infected people or animals, shared objects like towels and sheets, and shared surfaces like locker-room floors. It stays contagious until antifungal treatment gets underway; most skin cases clear with over-the-counter cream, while scalp and nail cases need prescription pills.
What to do
- Start an antifungal. Over-the-counter creams handle most skin ringworm; scalp and nails need a prescription.
- Stop the sharing. Own towel, own bedding, own clothing until it clears.
- Check the pets. A patchy, hairless spot on a cat or dog is the likely source - the vet treats it.
- Cover and wash. Keep the rash covered and wash hands after contact, including after applying cream.
Related questions
- Is impetigo contagious?
- Is pink eye contagious?
- Is shingles contagious?
- What happens at a skin biopsy?