Mine change often. For a while my right side just had a mild tingling. Then, it felt heavy. Then, I noticed my right arm would fall asleep easy when I didn't have good posture. Then, I started to get these pins and needles in my back, arms, and legs. The pins and needles almost feel like a burning sensation or something. I also get some muscle twitching throughout the day. This all started with pain in my groin and stomach area. The groin pain was a sharp stabbing and went away and the stomach pain also went away. I went from thinking I had testicular cancer, to prostate cancer, to crohn's disease, to colitis, etc. etc, to ms.