What is the medical term for hives?

Hives, commonly experienced as raised, itchy welts on the skin, are medically referred to as urticaria. This condition is characterized by the sudden appearance of these welts, which can vary in size and may be triggered by various factors such as allergens, stress, or medications.

Urticaria arises from an allergic reaction in which histamine and other substances are released into the skin, leading to inflammation and the characteristic welts. Understanding the specific term 'urticaria' is important for healthcare professionals as it helps in diagnosing and managing allergic reactions effectively.

The other terms listed—dermatitis, psoriasis, and eczema—refer to different skin conditions. Dermatitis involves inflammation of the skin often caused by irritants or allergens, while psoriasis is a chronic autoimmune condition characterized by red patches with silvery scales. Eczema, or atopic dermatitis, is a chronic inflammatory skin condition often associated with allergic reactions but is distinct from hives. Recognizing these differences is crucial for providing accurate diagnoses and treatments in clinical practice.