Ringworm on the bottom: symptoms and care

On the buttocks, ringworm can appear as a dry or scaly patch with a more active edge that gradually extends outward. It may itch, sting after sweating, or become more noticeable with friction. A skin rash is a common presentation of ringworm, while folliculitis, eczema, psoriasis, contact irritation, and bacterial infection can produce similar changes. The appearance alone is not always enough to identify the cause.

A clinician may examine nearby groin, thigh, foot, or nail skin because fungus can spread between body sites. Sampling the scale may be useful when the diagnosis is uncertain or the rash keeps returning.

Keep the area dry, rinse gently, pat rather than rub, and change sweaty clothing promptly. Do not share towels or clothing, and wash fabrics that touch the rash. If ringworm is diagnosed, use the recommended [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) for the full advised course. Wider or stubborn infection may need [Oral Antifungal Treatment](/treatments/medical-dermatology/oral-antifungal-therapy/).

Get prompt care for severe pain, warmth, pus, fever, rapidly spreading redness, open sores, or a tender lump. Arrange a review if the rash reaches the anus or genitals, causes bleeding, follows a new product or sexual exposure, or fails to improve with appropriate antifungal care. Avoid scratching because broken skin can invite another infection.

Ask whether the rash needs a skin sample, whether another body site could be the source, which treatment suits the location, and how to prevent recurrence. Tell the clinician about sweating, friction, household contacts with rashes, immune problems, and products already used.