Ringworm is an infection on the skin, hair, or nails. It's caused by a fungus. The infection usually causes a rash made up of round patches with raised, red edges. The rash spreads from the edges, often leaving the center clear. This ring shape is why it's called ringworm.
There are different types of ringworm. Depending on the type, it may be treated with prescription or over-the-counter antifungal medicine.
Primary Medical ReviewerKathleen Romito, MD - Family Medicine
Specialist Medical ReviewerJohn Pope, MD - Pediatrics
Current as ofMarch 12, 2014
WebMD Medical Reference from Healthwise