Piebaldism

A piebald person can be perfectly normal whereas Waardenburg syndrome is a group of genetic conditions that can cause hearing loss and hypopigmentation of the hair, skin, and eyes.

It could be anything , only the dermatologist and possibly after some tests can decide for sure.

If you are referring to Poliosis (decrease or absence of melanin in hair of the head) there are a number of diseases associated with it, here are a few:

Waardenburg Syndrome - associated with deafness

Piebaldism - associated with abnormal skin pigmentation

Partial Albinism - associated with eye problems

Vogt-Koyanagi-Harada Syndrome - associated with eye problems

http://en.wikipedia.org/wiki/Poliosis

http://en.wikipedia.org/wiki/Waardenburg%27s_syndrome

http://en.wikipedia.org/wiki/Piebaldism

http://en.wikipedia.org/wiki/Albinism

http://en.wikipedia.org/wiki/Vogt-Koyanagi-Harada

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