What should you know about hairline ringworm?

The infection can produce an expanding or ring-shaped rash, scaling, itch, broken hairs, or small areas of hair loss near the forehead and scalp. Appearance alone cannot confirm the diagnosis because eczema and other rashes can look similar. Infection may spread through close contact or shared combs, hats, towels, and pillowcases. Read about [Ringworm](/conditions/ringworm/), [Skin Rash](/symptoms/skin-rash/), and [Scaly Skin](/symptoms/skin-scaling/).

Arrange a clinical assessment, especially when hair is breaking or the scalp is involved. A clinician may examine hairs or skin and decide whether you need [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) or [Oral Antifungal Treatment](/treatments/medical-dermatology/oral-antifungal-therapy/). Do not share hair tools, headwear, towels, or bedding while infection is suspected. Wash reusable items regularly, avoid scratching, and do not use steroid cream alone unless a clinician advises it, because steroids can alter the appearance of a fungal rash.

Seek prompt care for scalp tenderness, swelling, pus, thick crusts, fever, rapidly spreading redness, or a patch of hair loss. These features can signal a deeper scalp infection or secondary bacterial infection. Get urgent help for facial swelling or breathing trouble after applying a product or medicine.

Is the hairline rash fungal or another condition? Does scalp involvement change treatment? Should household contacts or pets be checked? How should I clean combs, hats, towels, and bedding? When should improvement be reassessed?