Athlete's foot laboratory findings: Difference between revisions
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==Overview== | ==Overview== | ||
Athlete's foot can usually be diagnosed by visual inspection of the skin, but where the diagnosis is in doubt direct [[microscopy]] of a potassium hydroxide preparation (known as a [[KOH test]]) | Athlete's foot can usually be diagnosed by visual inspection of the skin, but where the diagnosis is in doubt direct [[microscopy]] of a potassium hydroxide preparation (known as a [[KOH test]]).<ref name=Palacio2000>{{cite journal |last=del Palacio |first=Amalia |authorlink= | coauthors=Margarita Garau, Alba Gonzalez-Escalada and Mª Teresa Calvo |title=Trends in the treatment of dermatophytosis | journal=Biology of Dermatophytes and other Keratinophilic Fungi |volume= |issue= |pages=148–158 |date= |url=http://www.dermatophytes.reviberoammicol.com/p148158.pdf |format=PDF|doi= |id= |accessdate=2007-10-10}}</ref> A KOH preparation is performed on skin scrapings from the affected area. The KOH preparation has an excellent positive predictive value, but occasionally [[false negative]] results may be obtained, especially if treatment with an anti-fungal medication has already begun. | ||
==Laboratory Findings== | ==Laboratory Findings== | ||
Revision as of 15:19, 14 December 2012
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Athlete's foot can usually be diagnosed by visual inspection of the skin, but where the diagnosis is in doubt direct microscopy of a potassium hydroxide preparation (known as a KOH test).[1] A KOH preparation is performed on skin scrapings from the affected area. The KOH preparation has an excellent positive predictive value, but occasionally false negative results may be obtained, especially if treatment with an anti-fungal medication has already begun.
Laboratory Findings
Microscopy
- Double direct microscopy of skin scrapings to establish diagnosis.
Biopsy
- A biopsy of the affected skin (i.e. a sample of the living skin tissue) can be taken for histological examination.
References
- ↑ del Palacio, Amalia. "Trends in the treatment of dermatophytosis" (PDF). Biology of Dermatophytes and other Keratinophilic Fungi: 148–158. Retrieved 2007-10-10. Unknown parameter
|coauthors=ignored (help)
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