A. Although it is very reassuring that he had a normal EEG and he is growing well, he likely needs more of an evaluation if you really think he is having seizures. Repetive, brief muscle spasms can be a sign of infantile spasms, but these children usually don't have a normal EEG.
Can you have seizures and a normal EEG? Yes.
It could be that he didn't have an episode during the EEG, in which case a video EEG might be more helpful. With a video EEG, in addition to the regular EEG recording, your child is also videotaped. This helps so that the doctor can relate what your child is doing, like when he has these 'full body muscle spasms,' with what the EEG shows.
At this point, you likely should try to see a Pediatric Neurologist for further evaluation.
