I had one round of IVIG and it didn't help, but maybe I needed to stick with it because neuropathy in legs and feet started about 10 days after getting a flu shot and pneumonia vaccination both on the same day.

That was in 2015. Two or three different Neuros gave me a diagnosis of an idiopathic sensory-motor axonal polyneuropathy. Unfortunately this has caused muscle atrophy in my legs and feet and has progressed quite rapidly. I am now needing to wear leg braces to walk which is a real bummer.

I also was worried about ALS; however, many neurologists have reassured me that ALS is very different from an axonal polyneuropathy. They suspect Charcot Marie Toothe disease to be more likely (i.e. a hereditary neuropathy). I do take high dose b12 which is recommended for ALS sufferers. I do the b12 because at least I'm doing something to maybe slow the progression. I also believe that the incidence of hereditary ALS is very low, so better not to worry about this. Anxiety makes neuropathy pain 10x worse!