Alopecia Areata from Wikipedia, the Free Encyclopedia

Alopecia Areata from Wikipedia, the Free Encyclopedia

Extracted Page: http://goo.gl/hHiRyw

Alopecia areata (AA) is a condition in which hair is lost from some or all areas of the body, usually from the scalp.[1][2] Because it causes bald spots on the scalp, especially in the first stages, it is sometimes called spot baldness. In 1–2% of cases, the condition can spread to the entire scalp (alopecia totalis) or to the entire epidermis (alopecia universalis). Conditions resembling AA, and having a similar cause, occur also in other species.[3]

Classification[edit]

Commonly, alopecia areata involves hair loss in one or more round

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