You are probably suffering from what Dermatologist call urticaria. Common causes are food allergy infection or drugs. It presents with itching resulting in formation of red rashes which we I call hives or wheals. Although in most cases cause remains unknown in spite of a thorough search. It can be symptomatically treated so that you do not get any new hives and the treatment should be prolonged until it resolves which usually takes 1 to 6 months. Please consult me in private for further details or visit a nearby Dermatologist. There are longer acting antihistamines other than Allegra which is short acting.
Answered2017-04-27 09:13:26
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