the lipophilic yeasts of malassezia species are members of the normal skin microbial that are cause of pityriasis versicolor. pityriasis versicolor is a common superficial fungal infection with world-wide distribution. the phenotypic methods for identification of malassezia species usually are time consuming and unreliable to differentiate newly identified species. but dna-based techniques rapi...

Microsatellite primers were developed and optimized for Lippia alba to characterize the L. alba germplasm bank of Universidade de São Paulo. A genomic library enabled the design of 9 microsatellite primers. Six of the 9 primers yielded polymorphic products, which defined 2 groups in the bank. The data provide support to characterize germplasm banks, genetic breeding programs for L. alba, and ot...

We established and validated diagnostic criteria for pityriasis rosea and Gianotti-Crosti syndrome. In this paper, we compare and contrast both diagnostic criteria to formulate a protocol in establishing diagnostic criteria for other dermatological diseases. The diagnostic criteria are similar in employing clear dividing lines and conjunctions ('and/or') to assure high reliability. Both sets of...

BACKGROUND Pityriasis (tinea) versicolor has a high tendency to recur after being treated successfully. Prophylactic treatment to reduce recurrence is needed. OBJECTIVE To determine whether recurrence of pityriasis versicolor could be prevented by prophylactic itraconazole treatment. DESIGN Open treatment followed by a randomized, double-blind, placebo-controlled phase. SETTING Multinatio...

OBJECTIVE To determine the prevalence and severity of seborrheic dermatitis and pityriasis capitis in Australian preschool-aged children. DESIGN A stratified cross-sectional skin survey using cluster sampling of centers throughout Victoria, Australia. SETTING The study population included children attending child care centers, preschools, and Maternal and Child Health Centers, with the refe...

Lesional histopathological features in pityriasis rosea (PR) are non-specific (1). Our aim here is to investigate whether a histopathological take-off sign (TOS) is associated with PR. We searched our records, and retrieved the 30 most recent patients with PR diagnosed according to a diagnostic criteria (2). Eight records had histopathological images available. For each, we retrieved the next p...