Request an online visit for Fungal skin infection. A licensed provider reviews your case and prescribes treatment when appropriate.
Board-Certified · Internal Medicine · Medical Director
All 50 states + DC·Video visit
In-network: Aetna, BCBS, UnitedHealthcare +18 more plans
Superficial fungal skin infections (tinea) are caused by dermatophytes that invade the outer skin, hair, and nails. They produce annular, scaly, often itchy patches with central clearing — “ringworm.” Common forms include tinea pedis (athlete's foot), tinea cruris (jock itch), tinea corporis, and tinea capitis. Diagnosis is usually clinical, sometimes confirmed by KOH microscopy. Limited disease responds to topical antifungals (terbinafine, clotrimazole) for several weeks; extensive disease, scalp involvement, or nail involvement requires oral terbinafine or itraconazole.