My daughters tell me these shaking episodes I have upon occasion early in the mornings. I just start shaking , my whole body , and this can go on for a few hours. I am aware of my shaking but not much else and then they gradually start slowing down and quit , then I have a headache and am tired. I would not call mine chills as I am not cold, just a shaking body . I am on a med to help me sleep, keep me calm but just a mild dose of ?? that I started a month ago. I was on prozac but don't want to take that anymore. I am on so many medications now for other issues I have and take meds 4 times a day. I do have copd, lung cancer, now my kidneys are causing issues, have had a heart attack and now say congestive heart failure, plus I am diabetic, my feet and ankle swell with fluid, Plus other things where medication is involved, like magnesium, and upon occassion , iron, potassiuim, . Ok , reason I wrote all this is because of the shaking spells. I've had tests done, they are seizures, don't know why , no answersThanks for listening......