Microscopically differentiating dermatophytes from sock fibers

Journal of the American Academy of Dermatology
Abraar KaranSteven R Feldman

Abstract

Dermatophytes are responsible for a number of superficial fungal infections that affect millions worldwide. During microscopic observation a potassium hydroxide (KOH) fungal smear, various filamentous materials such as common textile fibers from socks can obfuscate proper discernment of dermatophytes. To differentiate dermatophytes from 9 common sock fibers. Nine different textile fiber samples were microscopically analyzed by using a KOH direct smear test; their defining structural features were compared and contrasted with those of dermatophytes. Although there are several similarities, sock fibers tend to have a non-septate, uniform structure which differentiates them from dermatophytes. Sock fibers are also significantly larger than dermatophytes and can be viewed better at lower magnifications. There is a lack of sock samples with 100% textile fiber composition. Also, fibers were examined in a clean setting, without the detritus that normally accompanies dermatophytes in a clinical setting. While textile fibers may be present in KOH preparations, their general appearance typically differs from that of dermatophytes; an observer who is familiar with these distinctions will be able to differentiate between the two.

References

Jan 16, 2007·The Australasian Journal of Dermatology·Motahareh Karimzadegan-NiaAlireza Firooz
Sep 3, 2008·The Journal of Hand Surgery·Kara S Nunley, Lynn Cornelius
Sep 12, 2008·Mycoses·Blanka HavlickovaMarkus Friedrich

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Citations

Sep 2, 2016·Medical Mycology Journal·Sumanas BunyaratavejCharussri Leeyaphan

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