For the past four years or so, I break out in hives wherever heat touches me. I cannot take a hot shower or bath or I break out. I even break out sometimes with a warm shower. Now if I reach in the oven or cook over a grill, wherever the heat touches my skin reaches my bare skin that area becomes very red and raised. I often develop hives. It really itches!!!!! It can be relieved by benadryl, but it is very difficult to avoid heat altogether living in the south. I cannot let a heating pad or anything that is hot touch my skin. In fact, in the summer time when the steering wheel is hot the palms of my hands will get really red and itch like crazy. Can you really be allergic to heat?
Yes, there is an entity called localized heat urticaria, commonly called hives, heat being one of several physical causes of hives.
Physical urticarias are a unique subgroup of chronic urticaria in which people develop urticaria due to environmental stimuli. Common triggers include exercise, temperature changes, cold, heat, pressure, sunlight, vibration, and water. Systemic symptoms have occurred during severe episodes. Physical urticarias are responsible for approximately 20% to 30% of all cases of chronic urticaria.
It was reported in June 2001 in the Journal of Dermatological Science volume 26 number 2 pages 112-118 that therapy with antihistamines and repeated heat exposure to laser doppler flowmetry (LDF) might reduce one’s sensitivity to heat. I could find no more recent report on this or other therapy and, so, would strongly suggest that you consult with a university medical center-associated dermatologist, ideally a doctor with a special interest in urticaria, regarding possible desensitization techniques. In the meantime you and your doctor might want to initiate therapy with one of the non-sedating anti-histamines.
Copyright 1994-2018MedHelp.All rights reserved. MedHelp is a division of Vitals Consumer Services, LLC.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.