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).
Once cirrhosis -- which means severe scarring and fibrosis -- develops in liver tissue, the cirrhotic part will never regenerate. B-complex vitamins can help with effects of cirrhosis such as memory loss and nerve damage if you have liver damage, especially if you drink heavily. Vitamins and Your Liver. Liver disease can cause vitamin B deficiencies. The B-complex family comprises eight different B vitamins. Vitamin B deficiency most often occurs in alcoholics as a result of poor diet.