Recurrent and disseminated pityriasis versicolor: A novel clinical form consequent to Malassezia-host interaction?

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art_ROMERO-SANDOVAL_Recurrent_and_disseminated_pityriasis_versicolor_A_novel_clinical_2017.PDF (461.75 KB)
Citações na Scopus
9
Tipo de produção
article
Data de publicação
2017
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
CHURCHILL LIVINGSTONE
Autores
Citação
MEDICAL HYPOTHESES, v.109, p.139-144, 2017
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
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.
Palavras-chave
Pityriasis versicolor, Recurrent, Disseminated, Malassezia, Immunology
URI
https://observatorio.fm.usp.br/handle/OPI/25557
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MDT
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - LIM/48
Artigos e Materiais de Revistas Científicas - LIM/50
Artigos e Materiais de Revistas Científicas - LIM/53
Artigos e Materiais de Revistas Científicas - LIM/56