Alopecia Areata
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Alopecia Areata definition
Alopecia Areata is the name for a condition in which round patches of hair loss appear suddenly. The hair-growing tissue is attacked by the patient's own immune cells for unknown reasons. There are three stages: first, there is sudden hair loss, then the patches of hair loss enlarge, and last, new hair grows back. This process takes
months, sometimes more than a year, but rarely does the hair never grow back.
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