Erythrasma

Definition

Erythrasma is a long-term skin infection caused by bacteria. It commonly occurs in skin folds.

Causes

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, older, or have diabetes.

Symptoms

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 fungal infections, such as ringworm.

Exams and Tests

The health care provider will check your skin and ask about the symptoms.

These tests can help diagnose erythrasma:

Treatment

Your provider may suggest the following:

Outlook (Prognosis)

The condition should go away after treatment.�

When to Contact a Medical Professional

Contact your provider if you have symptoms of erythrasma.

Prevention

You may be able to reduce the risk of erythrasma if you:

References

Barkham MC, Khong B. Erythrasma. In: Lebwohl MG, Heymann WR, Coulson IH, Murrell DF, eds. Treatment of Skin Disease. 6th ed. Philadelphia, PA: Elsevier Limited; 2022:chap 77.

Dinulos JGH. Superficial fungal infections. In: Dinulos JGH, ed. Habif's Clinical Dermatology. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 13.


Review Date: 11/30/2022
Reviewed By: Ramin Fathi, MD, FAAD, Director, Phoenix Surgical Dermatology Group, Phoenix, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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