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).
The Benefits of B Complex Vitamins. 1  B3 (Niacin): Helps regulate the nervous and digestive systems and aids in the conversion of food into energy. 2  B5 (Pantothenic acid): Breaks down fats and carbohydrates for energy and is responsible for the production of hormones. 3  B6 (Pyridoxine): Helps the body turn food into energy.