Waardenburg syndrome type 1 (WS1) is a subtype of Waardenburg syndrome (WS), disorder characterized by congenital deafness, minor defects in structures arising from neural crest resulting in pigmentation anomalies of eyes, hair, and skin, in combination with dystopia canthorum. The disease is MONDO_0008670 (Waardenburg syndrome type 1). Also known as: WS1, Waardenburg syndrome type I.