Generally acute urticaria can use ice to achieve the effect of calming, itching; but cold urticaria can not be ice, so as not to aggravate the condition; if the rash site has broken when also can not use ice, so as not to lead to infection. 1. Acute urticaria is due to food, drugs, infections, physical factors such as acute limited edema, manifested as local erythema, wind, accompanied by obvious itching symptoms. Ice can cause local short-term anesthesia, to achieve the effect of sedation, itching, a short period of time will not feel itchy, but can not be a complete treatment of urticaria. 2. Cold urticaria belongs to a type of urticaria, is due to cold stimulation and other physical factors, manifested in the skin in the cold stimulation for some time after the emergence of the wind, erythema, edematous plaques, etc., in this case you need to avoid the ice, so as not to aggravate the condition. 3. When acute urticaria skin breakage exists, it is not recommended to use ice, to ensure that the wound is clean and dry, to avoid leading to infection, aggravate the difficulty of treatment. It is recommended that patients with acute urticaria actively search for the cause of the disease and avoid re-exposure; if necessary, use antihistamines under the guidance of a doctor, such as loratadine tablets, etc. for treatment; if acute urticaria is accompanied by shock, laryngeal edema and other symptoms, you need to immediately seek medical attention, rescue treatment.