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).
These vitamins are essential for numerous physiologic functions, including growth and development. Your diet often supplies the B vitamins you need, but in some cases, you may need a supplement to get sufficient amounts of the vitamins. The use of B complex can lead to adverse side effects, like stomach pain. An upset stomach, or mild stomach pain, is a potential side effect of B complex, according to Kaiser Permanente. Usually this effect is only temporary and disappears as your body adjusts to the B-complex supplement. If your stomach pain persists or becomes intolerable, consult a physician immediately.