What are rigors associated with medication withdrawal? I recently have had diahorrea and vomiting then delusions and hot and cold. Our local hospital gave put me on a drip and said keep drinking. I have been to the specialist and she asked me had I stopped taking my medication for depression and I said yes I was vomiting she said I should have kept taking it. She said I had rigors but I didnt know what that means. Can you explain please?