Alopecia areata

Summary of Alopecia areata
Alopecia areata, also known as spot baldness is an autoimmune disease in which hair is lost from some or all areas of the body, usually from the scalp due to the body's failure to recognize its own body cells and destroys its own tissue as if it were an invader. Often it causes bald spots on the scalp, especially in the first stages. In 1–2% of cases, the condition can spread to the entire scalp (alopecia totalis) or to the entire epidermis (alopecia universalis).

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Alopecia areata

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High Yield Notes
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Alopecia areata

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The first symptoms of alopecia areata are .

Questions

USMLE® Step 1 style questions USMLE

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USMLE® Step 2 style questions USMLE

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A 25-year-old woman comes to her primary care physician's office because of hair loss over the past two weeks. She has type I diabetes mellitus which is controlled with an insulin pump. She reports that her hairdresser noticed a "bald spot" on her scalp when she had her hair cut two weeks ago. Physical examination shows a well-circumscribed oval patch of hair loss in the occipital region with no evidence of scarring. The surrounding hair around the periphery is broken. Which of the following is the most likely diagnosis?