1, the wind masses often generalized all over the body, can also be limited. It can subside after a few hours, usually not more than 24 hours, and leave no trace after subsiding. With the development of urticaria, the new wind ball occurred one after another, one after another, sometimes repeated several times a day. There is severe itching, burning or stinging sensation, and very few patients have itching. Severe cases may be accompanied by symptoms of anaphylaxis such as panic, irritability, nausea, vomiting, and even decreased blood pressure.
2, the skin sudden itching, followed by the emergence of wind, bright red or pale white skin color, there are also edematous erythema; urticaria symptoms caused by the size and shape of the wind of varying, some up to 10CM diameter or larger, sometimes in the surface of the wind of the blisters, sparsely arranged, can be fused with each other to form a ring, topography, and other irregular shapes.
3, when the involvement of the digestive tract can be nausea, vomiting, diarrhea and abdominal pain; involvement of the larynx and bronchial tubes can lead to laryngeal edema, a sense of blockage of the throat, shortness of breath, chest tightness, dyspnea, or even asphyxia. If accompanied by high fever, chills, rapid pulse, leukocyte elevation and other systemic symptoms, it should be considered caused by acute infectious factors.