Erythrasma is a long-term skin infection caused by bacteria. It commonly occurs in skin folds.
Causes, incidence, and risk factors
Erythrasma is caused by the bacteria Corynebacterium minutissimum.
Erythrasma is more common in warm climates. You are more likely to develop this condition if you are overweight or have diabetes.
The main symptoms are reddish-brown slightly scaly patches with sharp borders. They may itch slightly. The patches occur in moist areas such as the groin, armpit, and skin folds. The patches often look similar to other fungal infections, such as ringworm.
Gently scrubbing the skin patches with antibacterial soap may help them go away. Your doctor may prescribe erythromycin gel that you put on the skin. If the condition is very bad, you may need to take this medicine in pill form.
The condition should go away after treatment.
Calling your health care provider
Call your health care provider if you have symptoms of erythrasma.
You may be able to reduce the risk of erythrasma if you:
Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.