Hair Disorders

  • Diffuse alopecia on the scalp

    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

  • Alopecia areata

    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

  • Localized alopecia

    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.

  • 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.

  • Beckers Nevus

    Beckers Nevus

    This benign condition is caused by an overproduction of melanin and hypertrichosis. It is most common in males soon after puberty.

  • Traction alopecia

    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.

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Hair disorders are common and can range from conditions including hair loss and baldness, excessive hair growth, and disorders involving the hair shaft. Causes of hair loss include, but are not limited to, genetic abnormalities, skin disorders, diseases, bacterial infections, hormone imbalances and damaging grooming practices.

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