Is ringworm an actual worm?

The word ringworm describes the shape a rash may take, not an animal or parasite. Fungi grow in the outer layer of skin and can cause itch, scaling, cracking, or a raised edge that expands outward. On the scalp, infection may cause scale, broken hairs, or areas of hair loss. The appearance is not always a neat ring, and eczema or other rashes can look similar.

Fungus can spread through skin contact or shared towels, clothing, bedding, brushes, hats, and sports equipment. People can also acquire some types through infected animals. It does not come from a worm travelling beneath the skin.

A clinician or pharmacist can help select treatment based on the body site and extent. [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) may be used for some skin infections, while [Oral Antifungal Treatment](/treatments/medical-dermatology/oral-antifungal-therapy/) may be needed for scalp, hair, nail, or more extensive disease. Apply or take medicine exactly as instructed and avoid sharing personal items.

Keep the area clean and dry, wash hands after applying treatment, launder towels and clothing, and have pets checked if they have bare or scaly patches. Do not scratch or use a steroid-only cream on a suspected fungal rash unless a clinician advises it.

Seek prompt care for a painful or swollen area, pus, fever, a rapidly spreading rash, scalp swelling, marked hair loss, or involvement near the eyes. Arrange a review if the diagnosis is uncertain or symptoms do not improve as expected. You can use [Ringworm](/conditions/ringworm/) for an overview and [Skin Rash](/symptoms/skin-rash/) or [Scaly Skin](/symptoms/skin-scaling/) to describe visible symptoms.

Ask what type of fungal infection is suspected, whether testing is needed, which treatment fits the affected site, how long to continue it, and whether household members or pets should be checked.