What are the types of chronic urticaria?

Chronic urticaria in chronic idiopathic urticaria more common, and more stubborn. Chronic urticaria part of the people will be self-healing. If strengthen exercise to improve immunity, is able to recover by itself. Chronic urticaria and acute urticaria difference table at present, acute urticaria generally does not exceed 6 weeks. More than 6 weeks, it is considered chronic urticaria.