Erythrasma is caused by Corynebacterium minutissimum. It presents as
dry, smooth to slightly creased or scaly, clearly demarcated reddishbrown
plaques, in the groins, armpits or under the breasts. It may easily
be mistaken for a fungal infection but direct microscopy with KOH is
negative for fungal elements. Lesions show red fluorescence when
viewed under Wood’s light.
Management of erythrasma
- An imidazole cream twice daily for 4 weeks. If not effective or recurrent infection:
- Erythromycin 250 mg 4 times daily for 2 weeks or
- Erythromycin 2% lotion twice daily for 4 weeks.
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