I have been on Resperidone and Effexor now for about 9 months. Starting Dunday I began developing hives First red spots on my hands then my whole hand has turned red and itchy, also burns like a sunburn. I am now begining to notice dime sized red circles in other places. Forearm, neck, legs. I have had no change in meds or any change in diet. I am wondering what could be the cause. Ugh, never had a rash before.