Infants with red body like allergies may indeed be caused by allergies, or pimple urticaria, etc., which can be relieved by general treatment or topical medication. 1. Skin allergy: infants who are allergic, contact with certain foods or pollen, pet hair, etc., may cause skin allergy phenomenon, manifested as red, red body, there can be rashes, itching, and so on. It is recommended to clarify the allergens and avoid contact. Bathe with clean water and scratch excessively to prevent infection. Severe itching can be applied topical glycerin lotion to relieve itching. 2. Papular urticaria: occurring in infants and children, common in summer and fall, may be related to mosquito bites, etc., should pay attention to personal and environmental hygiene, and stay away from mosquitoes and insects in the environment. If the symptoms are obvious, you can use weak hormone ointment, such as in the doctor’s guidance, external application of Dinaid cream, hydrocortisone cream, etc. to alleviate the symptoms. The baby body red like allergies, may also be caused by other reasons, such as eczema, etc., it is recommended to promptly go to the hospital to identify the cause of the cause, clear reasons for targeted treatment, the use of medication in accordance with the doctor’s instructions.