Papular urticaria, also known as urticarial urticaria and infantile urticaria, is an allergic skin disease common in infants and children, but adults can also suffer from this disease. This disease is a skin disease that often occurs in infants and children. It occurs in the spring and autumn and often several members of the family develop it at the same time. It is mainly due to a dermatitis reaction to insect bites and is characterized clinically by scattered, slightly hard, papules with small blisters on the top and intense itching. Certain foods can also aggravate the disease, especially the frequent consumption of foods such as fish, shrimp, crab and milk, as certain protein-based foods can cause a metabolic reaction in the body, stimulating the release of histamine from mast cells, leading to symptoms of allergy in the body. Patients should avoid eating such foods during treatment. Some drugs can be histamine-releasing substances that can aggravate the disease by causing a metabolic reaction in the body. Papular urticaria can be aggravated by various viral, bacterial, fungal and parasitic infections. Animal fur, plants, pollen, insect toxins, snake venom, and mental stress can also cause acetylcholine release and cause the disease. Oral anti-gelatin drugs have a better effect, and topical application of 1% peppermint, glyburide lotion or 1% peppermint cream and corticosteroid cream can stop itching and reduce inflammation. Secondary infection can be anti-infective treatment. Chinese herbal medicine can be added to the treatment with Jing Fang Tang or Ma Huang Lian Wings, and Adzuki Bean Soup. If papular urticaria occurs, seek medical attention to confirm the cause and treat it as early as possible to avoid harmful effects on the body.