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Piedra

  • A. Corteś
  • C. E. Orfanos

Abstract

The term piedra, meaning “stone” in Spanish, is used to describe fungal nodular lesions situated on and along the hair shafts. According to the color, consistency, and etiologic agent, two different types of piedra are generally distinguished: white and black. The first case of white piedra was described by Beigel in London in 1865 on the hair of a wig (Smith et al. 1973). In 1902, Vuillemin isolated the fungus from light-colored nodules growing on the hair of a mustache and designated the causative fungus Trichosporon beigelii; this was later renamed Trichosporon cutaneum by Lodder (1970). However, following Emmons et al. (1977), we prefer to continue designating it as Trichosporon beigelii because the fungus affects the hair shafts and not the epidermis or dermis. In addition, Trichosporon cutaneum has been associated in the past with gummatous lesions resembling syphilis or sporotrichosis, and more recently disseminated infections with involvement of internal organs have been described in immunosuppressed patients (El Ani and Castillo 1984).

Keywords

Scalp Hair Hair Shaft Louse Infestation Trichosporon Cutaneum Coral Stone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • A. Corteś
  • C. E. Orfanos

There are no affiliations available

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