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Annular Alopecia Areata: A Morphologically Rare Variant.

Shimona Garg1, Anand Kumar1, Mala Bhalla1

  • 1Department of Dermatology and Venereology, Government Medical College and Hospital, Chandigarh, India.

International Journal of Trichology
|February 15, 2018
PubMed
Summary

Alopecia areata, a common nonscarring hair loss condition, can present with unusual annular (ring-shaped) patterns. This report highlights two such rare cases, expanding the understanding of alopecia areata morphology.

Keywords:
Alopeciaannularhair lossscalp

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Area of Science:

  • Dermatology
  • Trichology
  • Autoimmune diseases

Background:

  • Alopecia areata (AA) is a prevalent autoimmune condition causing nonscarring hair loss.
  • Typically presents as round or oval patches on the scalp or body.
  • Increasing recognition of diverse morphological variants beyond classic patterns.

Observation:

  • Two distinct cases of alopecia areata exhibiting an unusual annular (ring-shaped) hair loss pattern were observed.
  • The morphology deviated from the commonly described oval or round presentations.
  • Detailed clinical examination confirmed the annular configuration of hair loss.

Findings:

  • The annular pattern represents a rare but distinct morphological variant of alopecia areata.
  • This presentation challenges the typical understanding of AA lesion shapes.
  • Histopathological correlation, if performed, would further elucidate the nature of this variant.

Implications:

  • Broadens the differential diagnosis for annular hair loss.
  • Highlights the importance of recognizing unusual presentations of common dermatological conditions.
  • May prompt further research into the specific mechanisms or triggers of annular alopecia areata.