What is urticaria characterized by?

Urticaria, commonly known as hives, is a condition characterized by a vascular reaction of the skin that results in the development of wheals and hives. These wheals are raised, itchy welts that can appear suddenly and may vary in size and shape. The reaction is often the result of exposure to allergens or irritants, causing the release of histamine and other chemicals in the body, leading to localized swelling and redness.

The nature of urticaria involves the rapid appearance of these welts, which can be transient and may resolve within hours. This distinct manifestation differentiates it from other skin conditions. Unlike options that mention dry skin, inflammation, or peeling, urticaria is specifically defined by this acute vascular reaction. Understanding this characteristic is essential in diagnosing and managing the condition effectively.