I have a brain tumor (grade 2) and am currently on chemo treatments. I take seizure medicines because the tumor also gave me epilepsy. For the last few weeks (maybe 4/5 weeks), I have been having convulsions when I am sitting or lying down. But I am awake and aware of this. It s not a full body tremor, but it takes turns. For example, my leg will twitch, then my head, then an arm, and finally my torso. It occurs in any of those combinations, and only when I m being still.