Allergic skin hives or urticaria, are red, itchy bumps near the surface of the skin. Like many other allergies, they are the result of overproduction of histamine and any reaction can be caused by a wide variety of things.
Although there are number of different treatments available for allergies, most if not all only treat the symptoms and not the root cause of the problem. Well-known antihistamines such as Benadryl a.k.a. diphenhydramine, Claritin also called loratadine together with decongestant sprays such as Nasonex, are available by prescription or over the counter and do a good job in providing relief for allergy sufferers.