Epidemiology and fungal species distribution of superficial mycoses in Northeast Brazil.
OBJECTIVE
Dermatomycoses are superficial fungal infections which affect the skin, hair and nails of humans and animals. Male and female patients of all ages are affected by this condition. The main etiological agents of dermatomycoses are the dermatophytes fungi of the genera Trichophyton, Microsporum and Epidermophyton, while the main yeasts belong to the genera Candida, Malassezia and Trichosporon. The variation in the distribution of dermatomycoses worldwide justify the conduction of epidemiological studies in order to contribute for the better understanding of patterns of mycological cutaneous infections. This study was conducted from April 2013 to December 2014.


METHODS
A total of 205 patients were evaluated, while 235 clinical specimens were obtained. From our positive cases of mycological examination, 73 (64.6%) patients were female, while 40 (35.4%) were male. Scales from the skin and nails were collected and observed at optical microscopy after potassium hydroxide clarification. Cultures were performed on Sabouraud Dextrose Agar added chloramphenicol. Identification was performed by classic methodology.


RESULTS
We found that the glabrous skin was the largest source of dermatomycoses (30.11%), followed by toenails (27.4%) and fingernails (17.7%). Regarding onychomycosis, the most affected population was over 50 years old. Trichophyton rubrum was the dermatophyte fungal species more commonly found. Most of the patients with pityriasis versicolor were adults and female. Another important fact observed is that Candida parapsilosis was the most prevalent species. Finally, a high incidence of T. tonsurans in cases of superficial mycoses was observed.


CONCLUSIONS
Our results clearly demonstrate peculiarities in terms of etiological agents of dermatophytoses distribution in a specific region of Brazil.
Laboratório de Micologia Médica e Molecular, Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
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Silva-Rocha
Laboratório de Micologia Médica e Molecular, Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
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de Azevedo
Laboratório de Micologia Médica e Molecular, Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil. Electronic address: guilherme.chaves@ufrnet.br.
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Chaves
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D003883:Arthrodermataceae / Q000145:classification; D001938:Brazil / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D003881:Dermatomycoses / Q000453:epidemiology* / Q000382:microbiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014009:Onychomycosis / Q000453:epidemiology / Q000382:microbiology; D015995:Prevalence; D055815:Young Adult
Dermatomycoses; Dermatophytoses; Distribution fongique; Epidemiology; Examen mycologique; Fungal distribution; Mycological examination; Nord-est du Brésil; Northeast Brazil; Épidémiologie