hello, my husband is 56 years old and is a diabetic and has a few other conditions, he had several surgeries in the the past on his left knee and right ankle and he had spinal stenoisis done in 2015 he has ruptured disc. Within the last year or so, everything on his right side is painful and it bothers him from the neck to the foot. He keeps falling stumbling over his feet and he walks dragging the whole one side of his body. Everyone thinks he had a stroke but he had the test for it and it showed that he didn t but he favors on the one side. My question is why does he keep falling, feel like 4 times within the last month and again today.??