Especies de Malassezia causantes de pitiriasis versicolor en Paraguay

Abstract

Background: Pityriasis versicolor is a frequent pathology in Paraguay; however, its epidemiology is unknown. Aim: To determine the frequency of Malassezia species causing pityriasis versicolor and the epidemiological characteristics of the population. Methods: Samples from patients with a presumptive diagnosis of pityriasis versicolor were collected. Laboratory diagnosis was carried out by fresh examination and culture in modified Dixon agar and chromogenic Chromagar Malassezia ® , incubated at 32° C, and identification by macro and micromorphological features, biochemical and physiological tests. Results: 102 patients were included (51% female) from 1 month to 63 years of age, the predominant age group was 11-20 years (35.3%). The most frequent location was on the back (60.8%). Hipocromic clinical forms (48%) predominated. The most frequent species was M. globosa (52.9%), followed by M. furfur (24.5%), M. sympodialis (18.6%) and M. slooffiae (6.9%). Conclusions: The observed epidemiology is similar to other South American studies, with no sex distinction, predominantly hypochromic clinical form and as primary responsible species appears M. globosa. This is the first report on species causing pityriasis versicolor in Paraguay and the characteristics of the affected population.

Rare Yeasts in Latin America: Uncommon Yet Meaningful

“…Trichosporon and Rhodotorula species have been reported as causing vaginosis in Venezuela [129]. Malassezia species have also been reported in cases of pityriasis versicolor in infants under one year of age in Dominican Republic [130] and M. globosa, M. furfur, M. sympodialis, and Malassezia slooffiae causing pityriasis versicolor in more than 100 patients from 1 month to 63 years of age in Paraguay [131]. In Puerto Rico, Malassezia and Saccharomyces were found in the fungal cervicovaginal biota in women with human papillomavirus (HPV) infection [132].…”

Pityriasis versicolor: Causes and new active ingredients as a potential treatment

“…(Rodoplu et al, 2014;Chebil et al, 2022). It affects people of both sexes and of all age groups, especially in adolescents and young adults due to the high production of sebum at this age (Fariña-González et al, 2019;Khattab;Omran, 2020;Chebil et al, 2022).…”