Hives are raised, red, itchy patches of skin. They usually have red borders and pale centres. Hives range in size from ½ centimetre to 8 centimetres (¼ inch to 3 inches) or more across. They may seem to move from place to place on the skin. Several hives may form a large area of raised, red skin.
Hives are an allergic reaction of the skin. They can happen because of a reaction to medicine, food, or infection. Other things can also cause hives. But sometimes the cause is unknown.
You cannot spread hives to other people.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse advice line (811 in most provinces and territories) if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.
Where can you learn more?
Go to https://www.healthwise.net/patientEd
Enter K772 in the search box to learn more about "Hives: Care Instructions".