I have had polycythemia since 2006. I now have peripheral neuropathy for more than a year. My b12 got critically low. I try to tell my neurologist this but he won't listen. Thinks it autoimmune or alcohol. I have much of the same symptoms that seem to get worse, not better. I even take two different b12 supplements twice a day. Any suggestions or opinions is welcome. I've had to file for disability due to the worsening symptoms. Depression is starting to take its toll on me.