Your Cures and Remedies Archive. ï»¿. Hives, also known as urticaria, is an allergic reaction that involves rash and welts appearing in different parts of the skin. Hives are extremely itchy and can either last for a couple of minutes or days before disappearing.ives, also known as urticaria, is an allergic reaction that involves rash and welts appearing in different parts of the skin. Hives are extremely itchy and can either last for a couple of minutes or days before disappearing.
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