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 Vitamins such as B-Complex and B12 also improve the cognitive functions in older adults. For example, B12 vitamins are good in maintaining good health of your brain nerves and cells. These vitamins can be found in foods such as beef, fortified cereals, salmon, beans, spinach, broccoli, papaya and organ meats. Omega 3 Acids are other nutrients responsible for good health of your brain.