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).
B-complex vitamins all work together to support cellular metabolism. B vitamins help the body metabolize carbohydrates, proteins and fats into glucose, which the body uses for energy. Glucose is the main source of energy for the brain and the body. Lack of B vitamins leads to weakness and fatigue.