Welcome to Healingwell. I'm sp happy you found us. It sounds as though your son had some form of tonic clonic (Grand Mal) seizure. It is definately good that he has not had another one since that night. Some people may have only one seizure their entire life but still have abnormal EEG's. He may be one of the lucky ones. Please keep us posted and let us know if there is any thing we can do for you during this trying time for your family.