Alopecia areata (AA) is a T lymphocyte-mediated autoimmune disorder of nonscarring hair loss with narrowing of the hair shaft near the scalp, clinically.1,2 Histologically, AA is characterized by hair follicle bulbs surrounded by infiltrating T cells.1-3 The progression of AA is uncertain, exhibiting diverse durations and extents of the condition. Typically, alopecia presents as a couple patches affecting the scalp, eyebrows, eyelashes, or body hair. However, in severe instances, individuals may experience complete hair loss on the scalp, known as alopecia totalis, or loss of all scalp and body hair, referred to as alopecia universalis (AU).
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Karim et al. (2024) studied this question.
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