This is a picture of Athlete's foot (tinea pedis). "Tinea" infection is caused by a fungus that grows on the skin, and is also referred to as ringworm. Cutaneous (skin) tinea infections are often named by their location such as pedis, meaning foot.
Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.