is divided up into four types, but all share the same basic symptoms. These are deaf
ness and partial albinism
, often causing the eyes to be of different colours. The other common feature is an abnormal separation of the inner corners of the eyes, and a correspondingly broad nasal
About one in 30,000 people is affected with this syndrome. As it is an inherited dominant set of characteristics sufferers almost always have a parent with the syndrome.
Type 4 also causes digestive irregularities. Diagnosis is by genetic test. The syndrome cannot be treated, but the symptoms, such as deafness can be controlled, for example with hearing aids.