I stopped taking sertraline about 12 months ago.. I initially encountered head shocks (zaps) and feelings of discomfort. This was my second time of withdrawing from the medication and I had encountered this before. I have still got the head shocks. not as severe and with no agitation, however has much as I try to ignore it its there... more often in the morning or the evening. Has anyone else encountered this... I feel that I am going mad with it.