Urticaria, commonly referred to as hives, appears as raised, well-circumscribed areas of redness and swell on the skin that are very itchy. It may be acute or chronic. urticaria that lasts more than 6weeks is termed as chronic.Some of medicines and conditions that can cause pruritussuch as heat, cold, pressure, exercise, sunlight, emotional stress, or chronic medical conditions. Most cases resolve spontaneously. However antihistamines are the mainstay of treatment.