Earlier today I passed out when I stood up.  My girlfriend said that I kept shaking with my eyes open.  I regained consciousness after a few seconds, all that I remember happening were bright lights and a sense of euphoria.  Ive always had an issue with passing out when standing up but have never been able to recall shaking or keeping my eyes open during.  I was also recently in a car accident in which I hit my head when the car flipped a few times which blew my ear drum.  And Ive also had major back issues since.  I was wondering if the shaking and passing out might have something to do with the car accident.My medical history is fairly clean except mental illness.
His understand your concern. I guess shaking, loss of consciousness are the symptoms of neurological deficit rather than mental illness. May it is due to seizure episode most probably generalized tonic-clonic seizure. Need to evaluate by EEG.EEG means electroencephalogram. Please consult neurologist for further help. There are many medicines to control this type of episodes and usually given after head injury if do you have in car accident. I hope I have helped you and still have a query then feel free to ask. Thank you. Happy to help you.