What is the medical term for hives?

The medical term for hives is "urticaria." This condition is characterized by raised, itchy welts on the skin, which result from an allergic reaction or other types of irritation. Urticaria occurs when histamine and other chemicals are released into the bloodstream following exposure to allergens, leading to localized inflammation and swelling.

Recognizing that hives can appear suddenly and often resolve quickly is important for understanding how to manage this condition. In contrast, dermatitis refers to inflammation of the skin with various causes, psoriasis is a chronic autoimmune condition characterized by red, scaly patches, and rosacea is a chronic skin condition that primarily affects the face, causing redness and visible blood vessels. Each of these other terms describes distinct skin conditions with their own unique characteristics and underlying causes, which differ significantly from the defining features of urticaria.