Hives : Heat induced hives is cholinergic urticaria. Rare cases of both heat and cold induced hives has been reported. It is treated w/ anti histamines -at times both H1& H 2 blockers . Histamine is usually the cause. Cold induced urticaria may be due to cryoglobulins. F/u/ w/ MD for treatment & to check for underlying immune/chronic issue https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2492902/
Answered 10/4/2019
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