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Trichomicosis pubis: black variety

I Neri1, A Frassetto, G Pasquinelli

  • 1Istituto di Clinica Dermatologica, Universita' di Bologna, Italy.

Genitourinary Medicine
|October 1, 1994
PubMed
Summary

This case study presents an extremely rare instance of black piedra, a fungal infection of the hair shaft. Microscopic analysis reveals fungal colonization and penetration of hair structures, offering insights into its pathogenesis.

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Area of Science:

  • Medical Mycology
  • Dermatology
  • Microbiology

Background:

  • Trichomycosis pubis, specifically the black variety, is an uncommon fungal infection affecting the hair shaft.
  • Understanding the pathogenesis of hair shaft infections is crucial for effective treatment and prevention.

Observation:

  • A case of black piedra in a 25-year-old male is documented due to its extreme rarity.
  • Scanning electron microscopy (SEM) was utilized to investigate the interaction between the fungus and hair structures.

Findings:

  • SEM confirmed that trichomycosis pubis is caused by bacterial colonization of the pubic hair.
  • The study observed that bacteria can directly penetrate the cuticular horny cells through their free plasma membrane.

Implications:

  • This detailed microscopic view enhances our understanding of the infection's mechanism.
  • Findings may inform the development of targeted antifungal therapies and preventative strategies for hair shaft mycoses.

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