If the body is very large and itchy bumps, it is possible that the patient has a wind cluster, the wind cluster may be the appearance of hives, the occurrence of hives may be related to the specific allergic substances stimulation, allergic substances may be the intake of allergic food, breathe in a certain allergic particles, so cause the skin to produce significant allergic changes. This allergic reaction is mainly due to the stimulation of the mast cells of the skin tissue type, resulting in a certain degranulation reaction, the degranulation of histamine, etc. will stimulate the surrounding soft tissues, resulting in certain edema and itching symptoms, edema from the appearance of the obvious wind mass or the formation of red spots, so at the same time will also cause certain itching symptoms.