Alopecia areata (AA) is one of the non-scarring focal alopecias. It is an autoimmune disease of the hair follicle, the etiopathogenesis of which is not entirely understood. At the hair root, a lymphocytic inflammatory infiltrate develops, resulting in follicle miniaturization and the growth of a thin dystrophic hair. Recently, however, a new strategy for the treatment of AA has emerged, focusing on reducing inflammation of the hair follicle by inhibiting Janus kinases (JAK). This is the first therapeutic modality officially approved for this…
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