My Neurologist said that there have been studies done on Seroquil and other psych meds that there is a small percentage that can cause TIA's or full on Stroke. He took me off them in case that was the cause. He wants to see me go 6 months without not another TIA or Stroke then he feels it would be safe to go back on something, Unless I get in a terrible mental place and I absolutely need psych med other than Lamictal.