Pain comes from the spleen inflammation. Look that up. I have a deadly parasite called Strongylodies and after so many months of almost dying from the same symptoms as Adam's, I found out I was infected with Strongylodies, and then took the drugs Ivermectine and got my life back. Left arm pain is from that. Strongylodies makes your spleen get inflammed. There could be other parasites. No natural cures will help.