05/02/2026
Ringworm
Ringworm is a common, contagious fungal skin infection (not a worm) caused by fungi like Trichophyton that thrive in warm, moist areas.
It causes itchy, red, scaly, ring-shaped rashes, typically lasting 2–4 weeks with treatment. It is treated with antifungal creams (clotrimazole, terbinafine) or pills for severe cases.
Also called taenia corporis, taenia capis, Athletes Foot i.e taenia pedis amongst others. epending on the area affected
Causes
Ringworm is caused by mold-like parasites (dermatophytes) that live on cells in the outer skin layer. They thrive in warm, humid areas, such as locker rooms, public showers, or in skin folds.
Symptoms
Skin: Red, raised, itchy, scaly patches that often form a ring with a clear center, though they may just appear as a scaly rash.
Scalp (Tinea Capitis): Scaly, bald patches, dandruff, and sometimes swollen, tender scalp.
Nails (Onychomycosis): Thickened, discolored, or brittle nails.
Other names: Athlete’s foot (feet), jock itch (groin), ringworm of the body.
Treatment
Topical Antifungals: Most cases are treated with over-the-counter creams, gels, or sprays (e.g., clotrimazole, miconazole, terbinafine) for 2–4 weeks.
Oral Medications: Prescription pills (e.g., griseofulvin, terbinafine, itraconazole) are used for severe, widespread, or stubborn cases, especially for scalp infections.
Transmission
Person-to-Person: Direct skin-to-skin contact with an infected person.
Animal-to-Person: Touching infected pets (puppies, kittens) or farm animals.
Object-to-Person: Contact with contaminated items like towels, clothing, bedding, or surfaces (e.g., gym floors).
Duration
Mild cases usually respond to treatment within 2 to 4 weeks. If it does not improve after two weeks of over-the-counter treatment, medical advice is recommended.
Source: Cleveland Clinic