Author:

ML Escobar, J Carmona-Fonseca

Date: 4 April 2004

Abstract:

Between 1990 and 2000, The Medical Mycology Laboratory at University ofAntioquia (Medellà­n, Colombia), attended 4621 patients, with nail dystrophies.We used the direct test and culture of nail samples for diagnostic purposes. Thisreport includes 310 patients, 7% (310/4621), with positive cultures for the samenon-dermathophyte fungi, in five or more places of inoculation. From the 310positive cultures, 284 (92%) were positive in direct test. No characteristic morphologyfor any of the genera could be detected. Until 1989 we had an average of9 cases per year and between 1990 and 2000 we found 28 cases per year (anincrease of 211%). The implicated genera were: Fusarium 50%, Nattrassia 31%,Aspergillus and Dendrophoma 7% each, Penicillium and Scopulariopsis contributedwith 2 % each, and Acremonium was found in less of 1% of cases. Thegeneral prevalence of onychomycosis due to non-dermatophytic fungi was about12,4% between 1990 – 2000. This report describes the main epidemiologicalcharacteristics found, comparing them with results from other authors, and definesthe basic profile of affected patients: adults (31-40 years old) who use occlusiveshoes (trainers) and practice sport, which predispose to hyperhydrosis andconsequently to onychomycosis. The course of the disease takes in average 30months in both sexes. The percentage of onychomycosis found was 62% forwomen and 38% for men.

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