Alopecia Areata: A Review
TLDR Alopecia areata causes patchy hair loss and is often treated with corticosteroids.
Alopecia areata (AA) is an autoimmune condition causing nonscarring hair loss, primarily affecting the scalp with solitary or multiple patches. The exact etiology and pathogenesis remain unknown, but histopathology shows increased telogen follicles and inflammatory lymphocytic infiltrate in the peribulbar region. Corticosteroids are the most commonly used treatment. This review details the mechanisms, clinical features, diagnosis, and management of AA.
