All Children's Hospital Logo

Health Information Library

Parents > A to Z > D > A to Z: Dermatophytosis (Ringworm)
A to Z: Dermatophytosis (Ringworm)

A to Z: Dermatophytosis (Ringworm)

May also be called: Ringworm; Tinea; Epidermomycosis

Dermatophytosis (der-ma-tuh-fy-TO-sis), or ringworm, is a highly contagious infection of the skin, hair, or nails caused by a type of fungus called a dermatophyte. It affects people of all ages but is particularly common in kids.

More to Know

Dermatophytosis is classified according to the part of the body that is affected. Athlete's foot and jock itch are two common forms of the condition.

Ringworm gets its name from the appearance of the rash, it is not caused by a worm. Shaped like a ring, the infection is red and swollen on the edge and healthy-looking in the center. Either one ring or several overlapping rings can appear on the skin. These raised patches are scaly and itchy and may blister and ooze. Ringworm on the scalp can cause temporary bald spots. Ringworm on the nails can cause them to become thick, discolored and brittle.

Keep in Mind

Ringworm is often treated with over-the-counter antifungal ointments. In some cases, doctors prescribe antifungal pills to be taken by mouth.

Scratching the affected area can sometimes cause a bacterial infection, which can be accompanied by a fever, pus, drainage, or increasing redness. If you see signs of a fungal or bacterial infection, contact your doctor for proper diagnosis and treatment.

All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.

Related Articles
P    A to Z: Tinea Capitis
P    A to Z: Tinea Corporis (Ringworm)
P    A to Z: Tinea Cruris (Jock Itch)
K    Athlete's Foot
T    Athlete's Foot
P    First Aid: Ringworm
K    Fungal Infections
T    Jock Itch
T    Ringworm
P    Skin, Hair, and Nails
P    Tinea (Ringworm, Jock Itch, Athlete's Foot)
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
© 1995-2015 KidsHealth® All rights reserved. Images provided by iStock, Getty Images, Corbis, Veer, Science Photo Library, Science Source Images, Shutterstock, and

Additional Info

Pocket Doc Mobile App
Maps and Locations (Mobile)
Programs & Services
For Health Professionals
For Patients & Families
Contact Us
Find a Doctor

All Children's Hospital
501 6th Ave South
St. Petersburg, FL 33701
(727) 898-7451
(800) 456-4543

Use Normal Template
© 2015 All Children's Hospital - All Rights Reserved