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Ringworm! Not caused by worms

What Is Ringworm?

Ringworm is a common fungal skin infection otherwise known as tinea. Ringworm most commonly affects

  • the skin on the body (tinea corporis),

  • the scalp (tinea capitis),

  • the feet (tinea pedis, or athlete's foot),

  • or the groin (tinea cruris, or jock itch).

What Causes Ringworm?

Certain fungi can help the body, but the dermatophyte types that cause ringworm irritate the skin instead. These fungi live off the dead tissues of your skin, hair, and nails. Dermatophytes thrive in warm, moist areas, such as the skin folds of the groin area or between the toes. You’re at greater risk of getting ringworm if you sweat excessively or have minor injuries to your skin, scalp, or nails.