Half of the baby’s face red, fever may be a normal physiological phenomenon, but also may be skin allergies, eczema, infection caused by the suggestion of timely medical care, clear causes for treatment. Common causes and treatments I. Physiological factors: there may be half of the face peripheral blood circulation is slightly faster, such as sunlight exposure to the side of the face will appear red, feverish situation, while the side of the face is not sunlight will not be red, feverish. Or babies sleep at night because of the side of the reason to sleep on one side of the face, resulting in poor blood circulation, there will be babies half of the red face, such cases parents do not have to worry about, will automatically subside within a few hours. Second, disease factors: 1, skin allergies, eczema: if the baby’s skin eczema or allergies, there will be half of the red face. Pediatric allergies can be prescribed oral anti-allergy drugs, such as loratadine, cetirizine hydrochloride, etc., allergen testing can be carried out to avoid re-exposure to allergens, for pediatric eczema can be applied to alleviate the symptoms of skin cream; 2, other: it may be due to infections or systemic immune system disorders, if accompanied by a low-grade fever, night sweats, cough, cough and so on, it is considered to be tuberculosis infection, which needs to be combined with the microscopic examination of the sputum specimen and the Chest X-ray examination to determine, can be antituberculosis treatment, such as the application of isoniazid, streptomycin and so on. If other parts of the body also appear red, it can be considered as the manifestation of systemic lupus erythematosus, and need to apply methotrexate, cyclophosphamide and other drugs. Precautions Infants with redness and fever on one side of the face are mostly due to physiological factors, but if they have not been relieved for a long time, parents should pay attention to it and seek medical attention to clarify the cause of the disease in order to avoid delaying treatment.