Hello, and welcome to Neuro Talk. I think your suspicions are correct, about growing up on the farm and being around various poisens. I was exposed alot to DDT while growing up in the 50's in Michigan. At the time DDT was OK for use, so I ate the blueberries right off the bush. Auto immune diseases started at 29 years old. Mayo clinic suspected this as well as contamination of the ground water.
Have you had a T @ B lymphocyte test? That was the one that Mayo clinic found in me to be very abnormal. I am sorry this happened to you also. Keep in touch here, there are lots of us with symptoms similar to how you are presenting. Take good care of yourself. I am on my own too. My son lives near by and he does help me. ginnie