Not sure if others have experienced this, hope that I don't sound crazy, but I feel that I have, on a few occasions, had what felt like a seizure during sleep. Not a limb jerking or the feeling of falling, but rather a full body wave of uncontrolled shaking. Not long lasting, but really disturbing, makes me feel a sense of panic as I am trying to wake myself. Yesterday, I had two of these occurances in a row, and once they were gone, everything was calm (I also tend to a tremor in one hand/arm, which can stay with me for weeks and then disappear into thin air). I've tried searching on the net, this site, etc and have seen some posts about seizures/FM, usually for those who have epilepsy. I've only ever had one waking seizure in my life, and that was in my twenties. Early morning exam at university, I went outside to smoke (smoker at that time), and I think that my blood pressure must have dropped or something but it was the weirdest thing - I started to shake, fell to the ground, and had no physical sensation of the ground. It passed, I got up, wrote my exam (didn't know what else to do) and aced it. Hmm. Wonder if others had an experiences or info to share?