The rash is characterized by an indefinite occurrence, which can fade from time to time and fade without a trace, usually within 24 hours, and is accompanied by significant itching, and after scratching the skin with the hands, there can be strips of raised red spots, which can subside on their own after a while. In clinical treatment, anti-allergic treatment can be carried out, such as intramuscular injection of chlorpheniramine maleate, intravenous injection of compound glycopyrrolate monoammonium S chloride, and oral administration of levocetirizine hydrochloride capsules, loratadine capsules, loratadine capsules, loratadine syrup, and topical application of glyburide lotion, as well as the need to avoid a spicy and irritating diet, and not to drink alcohol.