Hives, also known as urticaria, are raised, itchy welts on the skin that can range in size from a few millimeters to several centimeters. They are often caused by an allergic reaction to a substance such as food, medication, or insect bites. While hives can be uncomfortable and unsightly, they are usually not serious and will go away on their own within a few hours or days.
There are a number of things you can do to avoid hives, including: