Dermatology
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Definition

  • Alopecia is defined as loss of hair from body areas where it is normally found.
  • Hypotrichosis is often used interchangeably with alopecia; also defined as less than normal amount of hair; best reserved for congenital hair loss.
  • Hair loss is characterized by amount of loss, distribution, and presence or absence of inflammation.
    • Loss of individual hairs in an area can be partial or complete
    • Hair loss can vary in distribution and extent:
  • Focal, well-circumscribed areas
  • Multifocal or diffuse patchy areas
  • Symmetrical
  • Diffuse/generalized hair loss
    • Areas of hair loss can be inflammatory or noninflammatory

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