Histopathological Diagnosis of Alopecia Clinically Relevant to Alopecia Areata
February 2023
in “
Siriraj Medical Journal
”
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Studysummary This study found that acute alopecia areata features more terminal telogens and vellus hairs, while chronic alopecia areata shows more follicular streamers and nanogen hairs.
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A cross-sectional study of 113 patients with typical manifestations of Alopecia Areata (AA) was conducted to study the histopathological diagnosis of AA and compare the histopathology between acute and chronic AA. Out of the 113 patients, 109 (96.5%) were pathologically diagnosed with AA, while others were diagnosed with lichen planopilaris, lupus panniculitis, and unspecified scarring alopecia. The study found that acute AA had a significantly higher percentage of terminal telogen hairs and vellus hairs, while chronic AA had a significantly higher number of follicular streamers and nanogen hairs. The study concluded that typical manifestations of AA are not always diagnosed as AA.
