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hair follicleAlopecia Areata

Alopecia areata is seen most frequently in young and middle aged adults of both sexes. In the majority of cases, this type of hair loss is a self-limited process. In other words, the hair loss is usually reversible and needs no treatment. The exact cause of alopecia areata is not known, however, this type of hair loss is thought to be an autoimmune process affecting the hair. The patients experience a patchy type of hair loss, that is, the bald area appears as a rounded bare patch about 2.5 centimeters across.