Redness of the baby’s bottom may be caused by physiological reasons, such as diarrhea. It may also be due to pathological reasons, such as infant skin allergies and other causes, different reasons to take different ways of treatment, usually used to change diapers or medication to alleviate the symptoms. 1. Physiological causes: physiological diarrhea or other causes of diarrhea, will stimulate the baby’s local skin, causing red buttocks, this time you need to change diapers in time to find the cause of diarrhea symptomatic treatment. 2. Pathological causes: (1) changing diapers in time: the skin of the baby’s buttocks is in contact with feces and urine for a long time, and the skin can not resist bacteria, thus causing redness of the buttocks. You can apply zinc oxide ointment to the area as prescribed by the doctor. (2) Diaper allergy: babies allergic to diapers can also cause redness of the buttocks. If the baby is allergic to diapers, the brand of diapers should be changed in time, and breathable diapers should be chosen as much as possible. The above two points should consult a physician or pharmacist before using drugs, do not blindly use drugs, treatment of skin redness at the same time also need to strengthen the baby’s clean work, every day regularly to the baby’s skin cleaning, diligent change of clothes, pay more attention to the baby’s physical condition. Infant buttocks redness, should immediately and promptly consult a doctor to identify the cause of the disease, so as not to delay the condition.