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poliosis

Etiology: - associated disorders - vitiligo - alopecia areata - halo moles - piebaldism - Vogt-Koyanagi-Harada disease - Alezzandrini syndrome - Waardenburg syndrome - tuberous sclerosis (60%) Pathology: - decrease or absence of melanin in head hair, eyebrows, or eyelashes - inherited defect in melanisation - autoimmune destruction of the pigment cells at the base of the hair Clinical manifestations: - decrease or absence of color in head hair, eyebrows, or eyelashes

General

pigmentation disorder

References

  1. Wikipedia: Poliosis http://en.wikipedia.org/wiki/Poliosis
  2. DermNetZ: Poliosis http://www.dermnetnz.org/hair-nails-sweat/poliosis.html