BackgroundSeborrheic dermatitis (SD) is considered the second most frequently dermatosis associated with the genus
Malassezia but little is the knowledge about the epidemiology of this association.
AimsTo determinate the prevalence of
Malassezia species associated with SD and to analyse their distribution according to the location of the lesion on the body.
MethodsThis study was performed in Resistencia city, located in a subtropical area in northeast Argentina. In this study, 226 skin samples from patients with lesions compatible with SD were studied. Age, gender and body sites lesion were recorded. Strains were identified by PCR-RFLP.
ResultsOne hundred and thirty-one positive cultures were obtained. Association of 2 species was detected in 10 cases; therefore, 141 strains were isolated.
Malasezzia globosa (43.3%) was the most frequent species isolated, followed by
Malasezzia furfur (20.6%),
Malasezzia sympodialis (17%) and
Malasezzia restricta (16.3%). Three isolates of
Malasezzia slooffiae (2.1%) and one of
Malasezzia pachydermatis (0.7%) were obtained. Statistical significance (
P < 0.05) was found between
M. globosa and scalp.
Malasezzia restricta was isolated only in head areas.
ConclusionsThis study suggests
M. globosa is the most related species to SD. The prevalence of other species is different from that reported by other authors. Only
M. globosa and
M. restricta presented a pattern of relationship with the body sites of the lesions. It is noteworthy is the isolation of the zoophylic species
M. pachydermatis. The
Malassezia genus ecology and the pathogenic role of its species are still under study. This work is a contribution to this knowledge.
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