Urticaria (or hives) is a kind of skin rash notable for pale red, raised, itchy bumps!

Hives might also cause a burning or stinging sensation!

Hives are frequently caused by allergic reactions!

Most cases of hives lasting less than six weeks are the result of an allergic trigger.

Chronic urticaria is rarely due to an allergy (Which lasts longer than six weeks).

The majority of chronic hives cases have an unknown (idiopathic) cause!

Acute viral infection is another common cause of acute urticaria (viral exanthem)!

Less common causes of hives include friction, pressure, exercises, and sunlight!