Obviously it would have been don't take the antidepressant, but you can't go back and undo that. But the teen was put on it for a reason, and many people with mental illness get worse over time if they don't fix it in therapy or find a med that actually works, which is hard. As for the concussion, it wouldn't hurt, it seems to me, to find a neurologist who can test for post-concussion problems. Unfortunately, this isn't easy to diagnose or find and often takes years before it might show up on a diagnostic picture, but with all this going on, might be worth a try. Another problem, though, is, don't know if there's any cure for it. If he had childhood seizure disorder, how then can you be sure the wellbutrin caused the seizure? It's a hard problem, and it's also possible that if there is some brain problems that the meds for mental illness might be making it worse, as they affect brain neurotransmitters. Don't really know. When you see the neurologist, ask about CBD oil, it has been used for childhood seizure problems.