After a child is bitten by a flea, there is generally no special discomfort, you do not have to use drugs, if the secondary infection, you can properly apply erythromycin ointment and other drugs. If a child is bitten by a flea without obvious symptoms, generally do not need to use medication, you need to do a good job of skin cleaning, to avoid aggravation of the symptoms of infection, and at the same time, it is best not to often scratch with your hands. If a child is bitten by a flea after the appearance of obvious red, swelling, heat, pain and other symptoms, you can use glycerine lotion under the guidance of the doctor, can achieve the effect of astringent itching, but also with the use of erythromycin ointment and other drugs, the child’s skin recovery has a certain degree of help. Usually need to do a good job of skin care, avoid contact with all kinds of irritating substances. All of the above drugs should be used under the guidance of a doctor.