Medical literature have quite a number of entries devoted to the study of urticaria and what causes it. Let us try to look into them right now in the succeeding paragraphs. We will even find ourselves getting more and more into the root of the matter on the causes of urticaria. When you say you are suffering from the medical condition known as urticaria, it is simply you experiencing ‘hives’. It comes in the form of a skin rash with a bump, and it itches quite a bit. These bumps are typically raised, relative to the rest of the skin, and they are typically red in color.