Type 4 Waardenburg syndrome (also called Waardenburg-Shah syndrome) is characterized by symptoms of Hirschsprung's disease in addition to the classic features of hearing loss and pigmentation abnormalities.
[Effects of a vitamin B complex on functional recovery after nerve injury (author's transl)]. Hasegawa K, Mikuni N, Sakai Y. Functional recovery after nerve crushing was investigated in the following manner: Under pentobarbital anesthesia the sciatic nerve of the rat was crushed at the level of the hip (proximal crush) or the thigh (distal crush).
Vitamin B Complex Benefits. Vitamin B1, B7 and B6 acts as co-factors for different metabolic enzymes that are involved in generation of energy by metabolism of food. Moderate deficiency of any of these vitamins affects metabolic machinery of the cells leading to fatigue, weakness and irritability.