Its medical name is tinea capitis when it's on the scalp, and tinea corporis when it's on the rest of the body. On the nails it is known as onychomycosis. Ringworm on the skin starts as a red, scaly patch or bump. Over time, it may look like one or more rings with raised, bumpy, scaly borders the center is often clear.
This ring pattern gave ringworm its name, but not every infected person has it. The skin may flake, peel, or crack, and it can itch, sting, burn, or feel uncomfortable. Ringworm on the scalp may start as a small sore that looks like a pimple before becoming patchy, flaky, or scaly. These flakes may look like dandruff. It can make some hair fall out or break into stubble, leaving a bald spot. It also can make the scalp swollen, tender, and red. Sometimes, it causes a pus-filled mass known as a kerion , which can be confused with impetigo or cellulitis bacterial infections.
When the scalp is infected, it can cause swollen lymph nodes at the back of the head or neck. Ringworm on the nails may affect one or more nails on the hands or feet. The nails may become thick, white or yellowish, and brittle. Ringworm is caused by fungi that normally live on the skin, hair, and nails called dermatophytes.
When the environment they live in gets warm and moist, they grow out of control and start to cause symptoms. Besides spreading from person to person, ringworm can come from pets or other animals usually cats, dogs, or rodents.
It thrives in warm, moist environments such as public showers, locker rooms, or pool areas and can spread when people are in close physical contact. That's why it's common in people who play contact sports such as wrestling. It can also be passed on objects like combs, brushes, hats, towels, or clothing. Let your child's teachers know they have ringworm. Page last reviewed: 26 October Next review due: 26 October Check if it's ringworm The main symptom of ringworm is a rash.
The rash may be scaly, dry, swollen or itchy. The rash is usually ring-shaped, but it may look different on your face, neck or scalp. A table of possible causes of symptoms.
Affected area Possible condition Nails fungal nail infection Feet athlete's foot. Ferri FF. Tinea corporis. In: Ferri's Clinical Advisor Accessed Aug. Office of Patient Education. Fungal infection: Ringworm of the body.
Mayo Foundation for Medical Education and Research; Goldstein AO, et al. Dermatophyte tinea infections. Superficial fungal infection. Ringworm risk and prevention. Centers for Disease Control and Prevention. Kelly AP, et al. Fungal and yeast infections.
McGraw-Hill Education; Accessed July 14, Mukwende M, et al.
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