Ringworm is a fungal infection that affects the skin. It spreads from person-to-person. Ringworm appears as a round or oval patch. It is smooth in the center with a scaly, red border. The most commonly affected areas are the scalp, feet, nails, and groin. It's called ringworm because of the way it looks. It's not caused by a worm. Ringworm is not serious and can usually be treated at home.

Ringworm is caused by certain kinds of fungus. These are normally found in the soil and on the skin of humans and animals.

Ringworm can be spread in the following ways:

• Touching the rash on an infected person, such as during play or contact sports like wrestling.
• Sharing an item that has been used by an infected person such as a comb, towel, or hat.
• Contact with an infected animal. If you have pets, check them for ringworm. Dogs or cats may have scaly, itchy, and hairless areas that should be treated right away.
• Walking barefoot on shared surfaces such as locker rooms and public showers.

Symptoms vary depending on the area of the infection, but can include:

• On lighter skin, round pink or red patches with a scaly, red border that looks like a red ring.
• On darker skin, the patches are often brown or gray.
• Itching in the affected areas.
• Bald patches with scalp infections.
• Discolored nails with nail infections.

Ringworm is diagnosed by how it looks. The doctor will ask about your child's symptoms and health history. Your child will also be examined. You will be told if any tests are needed. Your doctor may also do a painless skin scraping to look at under the microscope or send it to the lab for further testing.

Ringworm on the body generally goes away within 4 or 6 weeks of treatment.

You can treat your child's ringworm by:

• Applying over-the-counter topical antifungal cream to the affected areas for body infections as directed by the doctor. Before and after you apply the cream, wash your hands with warm water and soap.
• Using medicines. Ringworm on the scalp or nails must be treated with oral medicine prescribed by the doctor. Make sure that your child takes all of the medicine, even if symptoms improve. Creams, lotions, and powders don't work for ringworm on the scalp.
• Supplementing the oral medicine for scalp infections by washing your child's hair and body with antifungal shampoo and body wash.
• Keeping the infected area clean and dry.

Contact your doctor if your child has:

• Symptoms that don't improve within 2 weeks of starting treatment.
• Signs of infection, such as pus, swelling, or fluid leaking in the affected areas.

Follow these steps to keep your child from passing ringworm to others:

• Have your child wash their hands often with soap and clean, running water. This is especially important after touching the affected areas.
• Don't let your child share personal items such as hats, combs, towels, or clothing.
• If your child has ringworm, keep the area covered with a bandage so that they don't pass the infection to others.
• Don't have contact with infected pets.