I am allergic to change in temperature?

Temperature change: You are likely not allergic to change in temperature as you are to change in the environment that results from the chnage in temperature. I suggest seeing your dr or allergist to determine what it is that is causing your problem.

Physical urticaria: An exposure to cold can induce hives (urticaria) as the skin rewarms. An allergist can perform an "ice cube test." similarly, a rise in core body temperature, as would be seen with exercise, hot tubs, (but not fever) can also induce hives; this is called cholinergic urticaria. Changes in temperature, weather -barometric pressure can trigger asthma as well.