Ringworm (Tinea)
Ringworm, also known as tinea, is a common fungal infection of the skin, hair, or nails. Despite its name, it's not caused by a worm but by a type of fungus. It often appears as a red, itchy, circular rash with clearer skin in the middle, resembling a ring.
Common symptoms
- Red, scaly, itchy patches on the skin
- Ring-shaped rash with raised borders and a clearer center
- Hair loss or brittle hair in affected areas (scalp ringworm)
- Thickened, discolored, or crumbling nails (nail ringworm)
- Blisters or pus-filled sores around the edges of the rash
- Peeling or cracking skin, especially between toes (athlete's foot)
- Itching, stinging, or burning sensation
Cause
Ringworm is caused by a group of fungi called dermatophytes, which thrive in warm, moist environments. It is not caused by a worm or parasite.
How common is it?
Ringworm is one of the most common fungal infections in children worldwide. In the U.S., scalp ringworm (tinea capitis) affects predominantly children ages 2-10, with prevalence rates varying by region. Body ringworm can be acquired from infected children, adults, or pets.
Treatment
Most cases of ringworm can be treated with over-the-counter antifungal creams, lotions, or powders applied directly to the affected area for several weeks. For more severe or widespread infections, or if over-the-counter treatments aren't effective, your doctor may prescribe stronger topical medications or oral antifungal medicines.
Prevention
To prevent ringworm, encourage good hygiene like washing hands frequently, especially after touching pets or other people. Avoid sharing personal items such as towels, hats, and hairbrushes, and ensure your child wears sandals or flip-flops in public showers and locker rooms. Keep skin clean and dry, especially in skin folds and between toes.
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Medical disclaimer: Educational only. Always consult a healthcare provider for diagnosis and treatment.