72 Erythrasma


Erythrasma presents as well-defined pink or brown patches with fine scaling and superficial fissures. Mild itching may be present.

The common sites for erythrasma are armpits, groin and between the toes. The intergluteal fold, submammary, and periumbilical skin may also be affected. 

Widespread infections are most often associated with diabetes mellitus.

Erythrasma is classified into three types according to location.

  • Interdigital erythrasma: between the 3rd, 4th and 5th toe web spaces
  • Intertriginous erythrasma: in the armpits, groin, under the breasts and umbilicus
  • Generalised/disciform erythrasma: on the trunk