Hives are itchy, raised circular areas. One in five people will experience hives in their lifetime. Often hives have an unknown
cause especially if they have lasted more than six weeks. They can be triggered by a stressor such as infection, emotional stress, medication, and physical stress such as heat, cold, vibration, and pressure. Hives are mediated by a chemical called histamine

Treatment: Treatment: anti-itch lotions and antihistamine pills (over-the-counter) and steroid creams and corticosteroids (prescription) as well as identifying and eliminating the offending stressor whenever possible.