When there is a high caffeine in the body it may lead to profuse sweating, anxiety, restlessness, increased
urination, increase blood pressure and heart rate, nausea, stomach ache, cold sweats, irritability etc. Hence, you need avoid coffee. Better to practice regular exercise with diet control.Hives seems to be independent of coffee intake and can be due to secondary to exposure to allergen and mediated by IgE antibodies.