Which lab studies should be performed to diagnose intertrigo?

Updated: Nov 13, 2020
  • Author: Paras Vakharia, PharmD; Chief Editor: William D James, MD  more...
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Potassium hydroxide (KOH) test, Gram stain, or culture is useful to exclude primary or secondary infection and to guide intertrigo therapy.

Wood lamp examination can exclude erythrasma or pseudomonal infection.

Perform an appropriate workup if systemic disease is suspected along with the intertrigo (eg, diabetes, acrodermatitis enteropathica, necrolytic migratory erythema secondary to glucagonoma) or if intertrigo responds poorly to treatment.

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