Not a doctor but I'd say it's a definite possibility.
Regarding your question about whether seizures could be related to his behaviors: heck yeah, if he's having seizures. When my son was having uncontrolled seizures I could predict when one was coming based on his erratic, revved-up behaviors. I could also watch him getting progressively weirder and wilder as he had a few in a single day. (COMPLETELY without impulse control, sobbing for no reason, and unable to think of common words like "sofa").
Good luck, and remember that even without anything actually showing up on the MRI or EEG, they still might be seizures. Sometimes neurology is just as vague as psychiatry. Ugh!
