Small red dots on the top of the baby’s lips may be caused by contact dermatitis, eczema, herpes simplex and other conditions, which need to be treated symptomatically with medications such as glycerine lotion, dienhydrinate ointment, acyclovir cream and other medications. 1. Contact dermatitis: baby’s skin is delicate, if stimulated by saliva, food residues, milk, etc., it will lead to small red spots on the lips and the skin around the mouth. In this case, you need to keep the local skin dry, and you can also use topical drugs such as Dinaid cream to relieve the symptoms. 2. Eczema: Eczema is related to a variety of internal and external factors, usually involving the face, resulting in small red dots on the baby’s mouth. In this case, under the guidance of the doctor, the topical use of zinc oxide ointment, Denadyl ointment, hydrocortisone butyrate cream and other drugs, can effectively relieve the symptoms of red spots on the baby’s mouth. 3. Herpes Simplex: Herpes Simplex Virus infection is caused by herpes simplex virus, which can be manifested as red spots and blisters on the baby’s mouth. This is a self-limiting infection, you can also follow the doctor’s instructions for topical acyclovir cream, pay attention to not let the baby lick to the drug. The red spots on the baby’s lips can also be seen in other causes, so it is recommended to go to the hospital to find out the cause of this situation, according to the doctor’s instructions to use medication for symptomatic treatment.