Introduction Hives, medically known as urticaria, are raised, red or pale, itchy welts on the skin. They vary in size and shape and may appear suddenly and fade within hours or persist for days. Hives are a common condition, often triggered by allergic reactions, stress, or environmental factors. While usually not life-threatening, severe cases can lead to angioedema or anaphylaxis, which require urgent medical attention. Understanding the causes, triggers, and proper use of antihistamines is essential for managing symptoms effectively. What Are Hives (Urticaria)? Common Causes of Hives 1. Allergic Reactions Mechanism: Allergens trigger histamine release, causing blood vessels to…