It doesn't happen every night, but last night was really bad for me. I must have had over 12 attacks while trying to go to sleep. I'm actually a quadriplegic, so I thought it was something related to my injury, but I have been unable to find anything about it. It actually feels like someone is punching me or like my body is on ice-fire, heart beating very quickly and the feeling like someone has injected me with adrenaline. Sometimes, I wake up gasping sure that someone is moving me. Any help would be much appreciated. I don't have any problem going to sleep, but staying asleep is hard. I also don't have any other anxiety or panic attack issues or depression. Most nights, I listen to an audiobook which puts me to sleep in under five minutes (sometimes, under 90 seconds). I'm missing a thyroid, so I take medicine for that, but apart from that I don't take anything on the regular. I also don't smoke, drink, use any kind of drugs or eat meat.