Sudden itchy skin bumps, the appearance of this symptom is first considered to be caused by allergic reasons, clinically more common are hives. Hives can be triggered by contact with certain irritating substances, such as pollen, as well as mental overstress. If you have hives, you should immediately detach yourself from the allergen and keep a distance from it. In addition, for the occurrence of this kind of urticaria, we can also take certain antihistamine drugs orally. If the symptoms are serious, can also be localized external use of certain drugs for treatment, such as corticosteroid ointment, at the same time with certain anti-itching drugs for symptomatic treatment. Diet must also pay attention to, must prohibit acid, spicy, stimulating food, and avoid smoking, alcohol and so on.