Acute allergic itchy skin first of all to avoid contact with allergic substances, taking anti-allergy drugs, the use of glycerine lotion to stop itching treatment, and so on. 1. Avoid contact with allergic substances: after the occurrence of acute allergy, the first choice is to detach from the allergen, otherwise the patient continues to have allergies, the condition is aggravated, and then all the therapeutic measures are based on the premise of detaching from the sensitizing environment. 2. Take anti-allergy drugs: such as cetirizine, the drug is suitable for the treatment of allergic reactions resulting in itching symptoms. Adverse effects include fatigue, rare weakness, and abdominal pain. Contraindications: It is contraindicated in people who are allergic to any of the components of the product or allergic to piperazine derivatives. 3. Glycolite lotion to stop itching: Glycolite lotion has the effect of astringent, anti-itching, external use of the drug can relieve itching caused by allergies. If the symptoms of acute allergic skin itching persist or worsen, it is recommended to go to the hospital as soon as possible. All of the above drugs should be used in accordance with medical advice.