Acute urticaria tends to have a rapid onset, and the patient will develop a large number of windy bumps in a short period of time, which may be a threat to the patient’s life and health in severe cases. It is necessary to pay attention to the serious symptoms such as dyspnea, laryngeal edema and shock, as well as skin infections and daily care. 1. Serious symptoms: When the patient has severe respiratory distress, laryngeal edema, palpitations, dizziness and other symptoms, the ambulance should be contacted immediately for emergency treatment to avoid life-threatening situations. 2. Skin infection: acute urticaria is often accompanied by intense itching of the skin, and patients are not advised to scratch with their hands or other objects to avoid skin breakage and further skin infection. 3. Daily care: Patients are advised to stay away from allergens that may cause urticaria and avoid re-exposure. When acute urticaria occurs, it is recommended to go to the hospital in time, avoiding self-medication to avoid delaying the condition or serious adverse reactions.