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Acquired partial curly hair.

J Ferrando1, R Grimalt

  • 1Department of Dermatology, Hospital Clínic, University of Barcelona, Villarroel 170, 08036 Barcelona Spain.

European Journal of Dermatology : EJD
|October 19, 1999
PubMed
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This study describes a new type of acquired hair curling in adolescent females, characterized by distinct normal and abnormal hair populations. The condition may be linked to environmental factors in susceptible individuals.

Area of Science:

  • Dermatology
  • Trichology
  • Genetics

Background:

  • Diffuse partial woolly hair is a rare condition affecting hair texture.
  • Understanding the etiology of hair shaft abnormalities is crucial for diagnosis and management.

Observation:

  • Six adolescent females presented with scalp hair thinning and curling.
  • Two distinct hair populations were observed: normal straight hair and abnormal wavy, curly, thinner hair.

Findings:

  • Microscopic examination revealed curled hair shafts with single torsions in the abnormal population.
  • Scanning electron microscopy (SEM) showed flattened, oval-shaped hair shafts with canalicular formations and cuticular weathering in abnormal hair.
  • Clinically normal hair exhibited normal morphology under light microscopy but showed weathering under SEM.

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Implications:

  • The findings suggest a new variant of acquired hair kinking (curling) mimicking diffuse partial woolly hair.
  • The condition's association with environmental exposure and spontaneous improvement points towards external factors in predisposed individuals.
  • Further research is needed to elucidate the precise environmental triggers and genetic predispositions.