Hi has anyone else experienced a burst of ibs type symptoms immediately preceding tingling in knees, hands and other neuropathic symptoms? I had lots of stomach noise, constipation and lack of appetite then the tingling started, I was a pretty fit 28 year old guy. No other symptoms really, sleep was ok, no fatigue, no brain fog. My b12 has been tested and it is ok apparently. I wonder whether this GI problem is related to autoimmune attack of nerves or some kind of weird malabsorption problem. All inflammatory arthritis tests have been negative, but main areas are knees and arms. I'm on lyrica, fish oil, and vitamin d. This has been going on one year now.