Cold urticaria Overview Cold urticaria (ur-tih-KAR-e-uh) is a reaction that appears within minutes after skin is exposed to the cold. Itchy welts, also called hives, arise on affected skin. Symptoms in people with cold urticaria can range from minor to serious. For some people with this condition, swimming in cold water could lead to low blood pressure, fainting or shock. Cold urticaria occurs most often in young adults. If you think you have this condition, check in with your healthcare team. Treatment usually includes steps to keep cold urticaria from happening, such as taking antihistamines and staying away from cold air and water. Symptoms Cold urticaria symptoms may include: Temporary itchy welts, also called hives, on the area of skin exposed to cold. A response that worsens as the skin warms. Swelling of the hands while holding cold objects. Swelling of the lips from eating cold food or drinking cold beverages. Serious responses may include: A whole-body reaction, also known as ...