Alopecia areata of the scalp - Definition

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Alopecia areata is a skin disorder specifically affecting the hair follicles. It can affect all hair growth of the body, but is usually focused on the scalp area, manifesting as well-defined spots of baldness. Sometimes, the entire scalp is affected, in which case it is simply called alopecia. The main complaint is esthetic in nature, with hair spontaneously growing back after a few months, initially as soft white hair which progressively darkens. The exact cause is still unclear and relapse is possible and unpredictable.