Slideshow
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Diffuse alopecia on the scalp
This type of rapid baldness may result from an autoimmune disorder, thyroid disorders or anti-cancers drugs. Photo credit: Phototake
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Alopecia areata
Close-up of alopecia areata, showing a hairless patch of scalp on a 36-year-old woman. It is thought to be caused by an immune system abnormality in which the hair follicles are attacked and normal hair formation is disrupted. Photo credit: Phototake
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Localized alopecia
Hair loss on the back of a 3-month-old baby caused by the baby rubbing its head on its bed. The hair will re-grow once the friction is stopped.
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HIrsutism
Young woman developing excessive facial hairiness known medically as hirsutism; the cause of the disease is not understood although it is thought to be associated with an hormonal disturbance. Photo credit: John Radcliffe Hospital / Photo Researchers, Inc.
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Beckers Nevus
This benign condition is caused by an overproduction of melanin and hypertrichosis. It is most common in males soon after puberty.
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Traction alopecia
Bald eyelids of a 12-year-old boy caused by traction alopecia — the gradual loss of hair due to continual force applied to the hair. This hair loss results from trichotillomania, a compulsive disorder in which patients have a strong urge to pull on and pluck hairs leading to hair loss that can sometimes be permanent. Photo credit: Dr. P. Marazzi / Photo Researchers, Inc.
