A 21-year-old female asked:
why do i get an itchy red flushing rash when i get hot or am in a hot environment for even short (less than 30) periods of time. what could cause this?? allergy meds (benadryl and vistaril) stop the itching but i still have red and hot skin for hours
2 doctor answers • 6 doctors weighed in
Allergy and Immunology 57 years experience
Where?: If the rash is confined to your face or neck, it may be from rosacea. If it is generalized, then cholinergic urticaria ( when small hives develop after activities which leads to an increase in core body temperature) would be the likely cause. Try doubling up your antihistamine to see if it works any better. See allergist if problem remains bothersome.
1188 viewsReviewed >2 years ago
Allergy and Immunology 12 years experience
Cholinergic hives: You could be suffering from cholinergic urticaria (hives) as your condition seems to be somewhat responsive to antihistamines. I would recommend seeing an Allergist for further workup and evaluation. Sometimes higher-dose daily antihistamines are warranted with this condition.
1125 viewsReviewed >2 years ago
Last updated Aug 25, 2016
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