My husband has a very rare neurological disease that is steadily getting worse since he was a teenager. He is now in his 50s. It includes spasms, lack of balance, extreme pain, poor memory, double vision and now he is losing the vision in the middle... and severe sleep deprivation which may be totally due to the severe pain. He also has peripheral neuropathy (the nerves dying off at the ends of the nerves). No diagnosis so far, although they though it was "stiff man syndrome".
Anyway the diagnosis is not what I am asking about. What nutrition, herbs or whatever else would likely help neurological problems in general?