Estudo de 15 casos de piedra branca observados na Grande Vitória (Espírito Santo - Brasil) durante cinco anos

Abstract

A piedra branca é infecção fúngica do pêlo, rara, causada pelo Trichosporon beigelii, caracterizada por nódulos amarelados nos pêlos genitais, bigode, barba, axilas e raramente, no couro cabeludo. O estudo registra 15 casos, diagnosticados em serviço de dermatologia de Vitória, durante cinco anos, todos de pacientes do sexo feminino, com nódulos nos pêlos do couro cabeludo. Os autores supõem que o clima quente e úmido da região e o hábito de as pacientes utilizarem cremes recondicionadores nos fios dos cabelos tenham favorecido a infecção. O umedecimento dos fios com água facilita a visualização dos nódulos.

Morphological and biochemical characterization of the aetiological agents of white piedra

“…In Paraíba (Pontes et al 2002b) and in Espírito Santo (Diniz & Souza Filho 2005), higher numbers of white piedra cases were found in children's scalps. The present investigation corroborates these earlier studies since the majority of the isolates (70%) were obtained from scalp white piedra found in children under the age of 10.…”

“…On the other hand, in some cases those in charge of the children reported that they habitually tied back their hair while still wet just after bathing and it was also observed that even the young children used cream conditioners and other hair creams. Diniz and Souza Filho (2005) suggested that those situations could be factors that are favourable for keeping hair wet and consequently for developing mycosis.…”

“…From the referenced literature, the cases of genital white piedra were the most frequently reported in Brazil (Brito & Costa 1966, Londero et al 1966, Carneiro et al 1971, Fishman et al 1980, Zaror et al 1989, Almeida et al 1990); however, more recent studies refer mainly to scalp white piedra (Nora et al 2002, Pontes et al 2002b, Diniz & Souza Filho 2005, with the exception of five cases of genital white piedra recorded in 2002 (Pontes et al 2002a). In Brazil, the disease has been recorded in the states of Pará, Rio Grande do Sul, São Paulo, Rio de Janeiro, Paraíba and Espírito Santo (Brito & Costa 1966, Londero et al 1966, Fischman et al 1980, Zaror et al 1989, Gondim-Gonçalves et al 1991, Nora et al 2002, Pontes et al 2002a, b, Diniz & Souza Filho 2005.…”

White piedra: molecular identification of Trichosporon inkin in members of the same family

“…Out of the 20 reported cases, 90% were observed in children under 9 years old, and all were in female patients 8,9 . Most were correlated with informed behavior of routinely using emollient creams on hair.…”

“…White piedra is an uncommon diagnosis in the southeast of Brazil, although some outbreak of scalp white piedra has been reported 8,9 . Out of the 20 reported cases, 90% were observed in children under 9 years old, and all were in female patients 8,9 .…”