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Alopecia: histologic changes.

W F Bergfeld1

  • 1Department of Pathology, Cleveland Clinic Foundation, Ohio.

Advances in Dermatology
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

Histologic examination aids in diagnosing various alopecia types by identifying key features like follicular plugging and inflammation. Recognizing these changes helps dermatopathologists determine the specific cause of hair loss.

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Area of Science:

  • Dermatopathology
  • Histology

Background:

  • Alopecia encompasses diverse conditions, including androgenic alopecia, alopecia areata, and scarring alopecias.
  • Histological examination is crucial for accurate diagnosis of hair loss disorders.

Purpose of the Study:

  • To outline key histological features for diagnosing common types of alopecia.
  • To emphasize the diagnostic value of specific microscopic findings in hair loss.

Main Methods:

  • Review of histological features associated with major alopecia types.
  • Identification of common and specific microscopic changes in chronic alopecias.

Main Results:

  • Common features include follicular plugging, reduced hair follicle density, fibrous tracts, and actinic damage.

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  • Specific indicators include actinic skin damage, dermal inflammation, decreased follicle numbers, altered anagen/telogen ratio, follicle miniaturization, involution, and scarring.

    • Conclusions:

    • Histological assessment of specific features enables dermatopathologists to diagnose alopecia with reasonable accuracy.
    • Recognizing patterns of follicular and dermal changes is essential for differentiating alopecia subtypes.