Ringworm is another name for tinea corporis. It is an infection of the skin caused by a fungus (a plant which is too small to see). Ringworm is not caused by a worm. The rash starts as tiny red pimples. The pimples spread out and form a round or oval area. The edges of the area are red, raised or scaly. The rash usually appears on only a few places on the skin but it may occur anywhere on the body. The rash may itch. Ringworm can spread to other people if they touch the rash or anything that has touched the rash.
How Ringworm Is Diagnosed
The doctor will diagnose ringworm by looking at the rash. The doctor may also scrape a few scales from the infected area and send it to the lab for examination under a microscope.
Ringworm of the Skin and Feet
The doctor will prescribe an antifungal cream. The cream is rubbed into the skin in the area of the rash. It is important to apply the cream just past the outside edges of the rash. This keeps the infection from spreading.
How to Put on the Antifungal Cream
- Wash and dry your hands.
- Wash the rash with soap and water.
- Dry the rash completely with a paper towel or cloth towel. Do not touch this towel to healthy skin. (A cloth towel must be washed before using it again.)
- Read the label on the cream your doctor ordered.
- Apply a thin layer of cream to the rash. Spread the cream on the outside area of the rash first then spread the cream toward the center of the rash (Picture 1).
- Wash and dry your hands well.
How to Prevent Ringworm
The fungus grows well on warm, dark, moist areas of the body. To prevent ringworm:
- Keep the skin clean and dry.
- Dry the skin well after washing.
- Wear clean clothes every day (Picture 2).
- Wash your hands well if you touch a ringworm rash or the hands of someone who has ringworm.
- Do not share towels.
- Once you begin to treat the rash with cream, your child may return to school.
- Wash the bathtub, bathroom sink or pan well after each use. Do not use the kitchen sink to wash the rash.
- Use a clean towel and washcloth each time. Reusing the towel or washcloth can spread ringworm.
- Explain to the child and family members not to share towels and washcloths.
- Keep your child's fingernails short.
- Teach your child not to touch the rash and to wash his hands right away if he does.
- It is best not to cover ringworm with a bandage.
When to Call the Doctor
Call your child’s doctor if the rash does not seem to be healing after 2 weeks or if the rash has not healed completely after 4 weeks.
If you have any questions, be sure to ask your doctor or nurse.
HH-I-143 1/91, Revised 9/05 Copyright 1991-2005, Nationwide Children's Hospital