condition icon
condition

Fungal Skin Infection (Ringworm): Causes and Treatment

Written by healthwords.ai's team of doctors and pharmacists based in UK | Updated: 27 Oct 2026 | 3 min read

Tinea corporis is the medical name for a fungal infection found on the non-hairy parts of the body. Ringworm is another description many people use because of the distinctive appearance of the ring-shaped rash – it's a bit misleading as no worms are involved.

Typically, a fungal infection appears as a blotch, with a raised red line around the edge and a red, pink, or light brown center. There might be a slight dullness or scale over the rash, there may be one or two marks, or they can grow in number or size and merge. Occasionally little white or yellow pustules can appear. Mild itch is the most common complaint.

Tinea corporis can affect any age and is more common in men than women.

Is ringworm contagious?

Tinea corporis is contagious: from skin-to-skin contact with others, but more importantly, from different sites on your body. You should get any fungal nail infection or athlete's foot treated at the same time, as these are both types of tinea infections.

Healthwords pharmacists' top tips:

Ringworm of the skin (tinea corporis) can usually be treated with over-the-counter antifungal creams. Common options include clotrimazole, miconazole, and terbinafine, which work in different ways to treat the fungal infection.

Products such as Lotrimin AF (clotrimazole 1%) and Micatin (miconazole 2%) are effective for most cases of ringworm. Apply a thin layer to clean, dry skin over the affected area and slightly beyond the edges of the rash, twice daily for 4 weeks.

Another option is Lamisil AT (terbinafine 1%), which works differently and generally requires a shorter treatment course. For ringworm, the US product labeling recommends applying the cream once daily for 1 week.

Always follow the directions on the product label and complete the recommended treatment, even if your symptoms improve sooner. If the rash worsens, spreads, or does not improve after treatment, contact your healthcare provider. Ringworm affecting the scalp or nails usually requires prescription treatment.

Avoid using steroid creams, such as hydrocortisone, on ringworm unless directed by your healthcare provider, as they can make the infection worse.

Ringworm is contagious. Wash your hands after touching or treating the affected area, keep your skin clean and dry, and avoid sharing towels, bedding, or clothing to help prevent the infection from spreading.

When should I see my doctor?

If over-the-counter remedies do not help, your rash is widespread, or you have a recurring rash, you should book an urgent appointment with your doctor. They will discuss your symptoms and examine you. They may decide to send you for further tests, such as taking skin scrapings, or refer you to a specialist.

Am I fit for work?

You are fit for work with a fungal skin infection.

This article has been written by UK-based doctors and pharmacists, so some advice may not apply to US users and some suggested treatments may not be available. For more information, please see our T&Cs.