What should you know about first stage of ringworm?

Ringworm, also called tinea, is a fungal infection rather than a worm. It may start as a small itchy or dry patch on the body, scalp, feet, or groin. Over time, the edge can become raised, red, and scaly while the middle looks calmer. This can resemble other causes of [Skin Rash](/symptoms/skin-rash/) or [Scaly Skin](/symptoms/skin-scaling/), so appearance alone cannot confirm the diagnosis.

Fungi thrive in warm, damp environments and can pass between people, pets, shared items, and surfaces. A clinician may ask about household contacts, animals, gym or pool exposure, and whether the scalp or nails are involved.

Keep the area clean and dry, wash hands after applying treatment, and avoid sharing towels, clothing, hairbrushes, or sports equipment. Wash clothing and bedding regularly and arrange veterinary advice if a pet has a suspicious bald or scaly patch. A clinician may recommend [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) for skin infection. Scalp involvement, extensive disease, or failure to improve may require [Oral Antifungal Treatment](/treatments/medical-dermatology/oral-antifungal-therapy/). Do not use steroid cream alone on an undiagnosed ring-shaped rash because it can alter the appearance and allow fungus to persist.

Arrange medical review if the rash involves the scalp, beard, nails, face, or genitals, spreads despite treatment, or affects someone with reduced immunity. Seek prompt care for pus, increasing warmth, severe pain, fever, or rapidly spreading redness. Children with scalp scaling or patchy hair loss need assessment because treatment may differ from that for a small body patch.

Ask whether the pattern is consistent with ringworm, whether skin scrapings or another test are needed, how long to use treatment, and whether close contacts or pets should be checked. Ask which items need cleaning and when the rash is less likely to spread.