What is the pathophysiology of erythrasma?

Updated: Sep 10, 2018
  • Author: Abdul-Ghani Kibbi, MD; Chief Editor: William D James, MD  more...
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Answer

Corynebacteria invade the upper third of the stratum corneum; under favorable conditions such as heat and humidity, these organisms proliferate. The stratum corneum is thickened. The organisms that cause erythrasma are seen in the intercellular spaces as well as within cells, dissolving keratin fibrils. The coral-red fluorescence of scales seen under Wood light is secondary to the production of porphyrin by these diphtheroids.


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