I have had unexplained neurological/GI symptoms for the past year including weakness in the hands, arms, and legs, tinnitus, hand tremors, partial numbness in the arms, fasciculations in the legs, constipation, and occasional diarrhea and nausea. MRI was clear. Blood tests normal. Stool tests normal. I am 56 years old. I had similar symptoms about 20 years and they went away after about 9 months. This time they get better then get worse again, then better again. Also have trouble sleeping, but this could be due to anxiety. Anyone experience something similar. I did have ciguatera poisoning once but that was in 1997. I have an elevated mercury level but the docs don't think that it likely explains the symptoms. MS has been bought up of course but nothing showed up on the MRI and I think I am little bit old for this. I did wonder about RRMS, and whether I might be coming out of a 20 year remission, but not sure if remissions this long have ever been observed. Anyone have any ideas what this might be? Thanks.