My husband had his 4th shunt replaced in August. He's had a shunt since he was 29 years old. He is now 58. The cause of his hydrocephalus is really unknown as it was latent. It may have been caused by a fall. The last shunt was 3 years ago and he bounced back to his regular self in about two months. This time, however, the shunt was replaced a bit higher than the last one on the right side of his head. His vision has improved but he can't really multitask so he can't go back to his high school Math teaching job yet, he also has been experiencing a numb feeling on the left side of his body: the shoulder, arm, thigh, chest and neck. He doesn't feel any pain. Just dull and weak numbness. It hasn't gotten any better as time goes by, it seems to stay the same or become worse. Has anybody experienced any such symptons? If so, what can he do about his numbness? His doctor said that it may be due to brain injury and to be patient. He also suggested physical therapy if it doesn't get any better in a few months. He just doesn't like the feeling. Is this normal? Please advise.