Urticaria, commonly known as hives, is a skin condition characterized by itchy, raised welts that can appear anywhere on the body. These welts, or wheals, are often red and can vary in size. Urticaria can be acute, lasting less than six weeks, or chronic, persisting for longer periods. In the context of Toxicology, urticaria can be induced by various substances, including drugs, chemicals, and environmental toxins.
