A group of rare, genetic, and congenital diseases, characterized by hearing loss, distinctive facial abnormalities and unusual skin, eye & hair pigmentation. It is caused by the lack of melanocytes, which are responsible for forming the pigment melanin. Other signs include white patches on the skin, premature grey hair growth, a cleft palate, a unibrow, and a wide nose. There is no cure for the disorder, but it can be managed.
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