Abilify most likely caused me to faint and possibly seize....I almost killed myself and my little dog when I came crashing down into the ground. I could hear people running to me and worried and I tried to tell them I was ok but couldn't speak. Take caution when taking these drugs...wTch for any lightheaded or feelings of dizziness. Like an above poster, I also believe psych meds can cause symptoms of bipolar or make them worse. Good luck on finding what works. Wellbutrin used to effect me much like you describe....not consistently, but it had more than it's fair share of moments when it did. It wasn't all bad though. Perhaps you just need a lower dose?