Ringworm on the testicles: what to know

Groin ringworm, sometimes called jock itch, usually involves the warm skin folds around the upper thighs and groin. It may produce itch, scale, redness or darker discoloration, and a defined spreading edge. A scaly skin change is a common presentation of ringworm in this region, yet sweat rash, eczema, chafing, yeast, and sexually transmitted infections may cause similar symptoms. A rash directly on the scrotal skin is less typical and merits careful assessment.

The location matters because delicate skin absorbs medicines differently and can react to combination creams. Do not use a steroid-containing product on an uncertain groin rash unless a clinician has advised it.

Keep the groin dry, change out of damp underwear, wear loose breathable clothing, and avoid sharing towels. Use an antifungal treatment only as directed; a clinician may recommend [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) for skin-fold disease. If the infection is extensive, persistent, or involves another site, [Oral Antifungal Treatment](/treatments/medical-dermatology/oral-antifungal-therapy/) may be considered.

Seek urgent care for sudden severe testicular pain, marked swelling, fever, blisters, ulcers, or rapidly spreading redness. Arrange a dermatology or primary-care review for discharge, painful urination, a new sexual exposure, recurrent symptoms, or a rash that does not respond to the advised antifungal. Those features can point to a condition other than ringworm.

Ask whether the scrotal skin is involved, whether testing is needed, which product is safe for the area, and how long treatment should continue. Mention sweating, friction, new products, sexual contacts, diabetes, and any medicines already applied.