The child’s head touched a bag, this situation is often encountered, considering the trauma caused by the local capillary rupture, bleeding blood gathered under the scalp, the formation of scalp hematoma. Need to give the child bulging place local cold compresses, you can use a cool towel or ice cold compresses, can play a very good bleeding, swelling effect. 48 hours later you can use hot compresses in the local, with a hot water bag or a hot towel, can promote the dissipation of bruises, hematoma absorption, within a week of the basic bulge of the place completely absorbed. Very few scalp hematoma can not be completely absorbed, or even gradually increase, the serious need to puncture the hematoma, or even cut and drain. If the child is injured and dizziness, headache, or even nausea, vomiting, coma, you need to go to the hospital as soon as possible to do a CT scan of the skull, to determine whether there is a skull fracture or intracranial hemorrhage, if necessary, need to be hospitalized.