Cause of hives: Most of the time the cause of hives cannot be found. There are different types of urticaria such as cold, cholinergic, pressure-induced and solar.There are several over the counter antihistamine to that you can take ie allegra, Claritin (loratadine) and zyrtec. They need to be taken everyday to be effective. Be sure that they do not interact with any of the other drugs you are on. C a doc if they continue.
Answered 12/22/2017
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