Urticaria, also called hives, are red and itchy skin rash that usually develops in response to some allergen. The body releases histamines and other chemicals under the skin surface in response to the allergen, resulting in this rash. Acute urticaria is when hives last for less than six weeks.
Urticaria - Causes and Treatment
Urticaria is a skin condition characterized by itchy wheals or hives over the body. The below article details the same.
