C.M.
16 months is too early to be able to diagnose him as anything besides busy boy! But do keep track if he's reaching milestones within the acceptable range and keep a close relationship with a good pediatrician. If he truly does only have febrile seizures (not epilepsy--our son's started out as febrile but we later learned he had a seizure disorder that was being set off by the fever) that should have no bearing on his wild energy level. You might visit an occupational therapist to see what they think...he could have a little sensory processing disorder that makes him crave constant input to balance the central nervous system.
You might just have a genius on your hands and he can't wait to mature enough to use it!
Get a dog that will give him responsibility and match his energy level as he and the dog grow up together...