One particular one would be when
he gives himself injections? Is he taking by mouth any medications?
Or are you
saying that he is treating himself w/ eating proper, vitamins, herbs, and whatever else? Now when you say that it is spreading up to his thighs,...What do you mean?? Is he able to walk, or he is just getting weaker, or a numbeness / tingling in the thighs?
Sorry for so many questions, but we could get a better / clearer picture of what you are asking and his symptoms...