Please use this identifier to cite or link to this item: https://observatorio.fm.usp.br/handle/OPI/25557
Title: Recurrent and disseminated pityriasis versicolor: A novel clinical form consequent to Malassezia-host interaction?
Authors: ROMERO-SANDOVAL, KarinaCOSTA, Anderson AlvesSOUSA, Maria Gloria TeixeiraFURUCHO, Celia ReginaVALENTE, NeusaCRIADO, Paulo R.AOKI, ValeriaBENARD, Gil
Citation: MEDICAL HYPOTHESES, v.109, p.139-144, 2017
Abstract: Pityriasis versicolor is a superficial fungal infection caused by Malassezia spp. The aim of this study is to propose the definition of a new clinical entity: the recurrent and disseminated pityriasis versicolor (RDPV). All patients with RDPV were enrolled over an eight-month period. Clinical and epidemiological data were obtained, Malassezia (M.) species were isolated in cultures and identified by phenotypic and molecular characterization, skin biopsies were taken from active lesions, serum levels of immunoglobulin E were obtained and therapeutic schemes were evaluated. A total of 16 patients were included (11 male, 5 female). The most frequently isolated species were M. japonica (n = 3) and M. furfur (n = 3). This is the first study that isolates M. japonica in patients with pityriasis versicolor; interestingly, those were recalcitrant patients. Seven patients (43.8%) had no cure with any of the proposed treatments; among those, 5 (71.4%) had increased serum IgE levels. The most effective treatment was itraconazole 200 mg daily for 28 days. The RDPV has very different features from the classic form, including a poor response to treatment, and the isolation of different Malassezia species; therefore, we propose a hypothesis for the definition of a new clinical condition (RDPV), which could be a result of the interaction Malassezia-host.
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Artigos e Materiais de Revistas Científicas - FM/MDT
Departamento de Dermatologia - FM/MDT

Artigos e Materiais de Revistas Científicas - HC/ICHC
Instituto Central - HC/ICHC

Artigos e Materiais de Revistas Científicas - LIM/48
LIM/48 - Laboratório de Imunologia

Artigos e Materiais de Revistas Científicas - LIM/50
LIM/50 - Laboratório de Patologia das Moléstias Infecciosas

Artigos e Materiais de Revistas Científicas - LIM/53
LIM/53 - Laboratório de Micologia

Artigos e Materiais de Revistas Científicas - LIM/56
LIM/56 - Laboratório de Investigação em Dermatologia e Imunodeficiências


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