Access info on COVID tests, vaccines, visitor policy, hospitalization data, and FAQs.
Search by keyword or browse our list of services.
Find a provider by specialty, location, or availability.
See current studies testing new drugs, devices, and equipment to find better ways to treat and help patients.
For life-threatening emergencies, call 911 without delay.
Search by specialty and location.
Receive the highest level of care from the region's leading providers.
Find a lab or imaging facility close to you.
Find an outpatient infusion center.
Visit us to pay bills, ask billing questions, or request billing records.
Hives (urticaria) are an allergic reaction of the skin that may last a few minutes or can persist for a few days. They appear as raised, red, itchy bumps (wheals) of different shapes and sizes, with defined red margins and pale centers.
Hives may appear and then disappear at random and seem to move from place to place on the skin. Hives may range in size from less than 0.25 in. (0.6 cm) to 3 in. (7.6 cm) across or larger. Patches of hives may combine to form raised, reddened skin over large areas of the body.
Hives may appear as a reaction to a medication, food, or infection. A single area of swelling often occurs after an insect bite at the site of the bite. Other possible causes include contact with plants, things you breathe in (inhalants), stress, makeup, and exposure to heat, cold, or sunlight. Often a cause cannot be found.
Hives are often minor, but they can also be the first sign of a life-threatening allergic reaction (anaphylaxis) that requires emergency care.
To learn more, visit Healthwise.org
© 1995- Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
You take care of others, so take care of yourself. Let us be your partner in health, whether you're recovering from an injury, checking in for your annual exam, or enjoying an online class.
Because when you take care of yourself, everyone around you benefits.