Children are taken care of by adults, but inevitable small accidents can happen if they are not careful, and parents are most worried about dropping their child’s head. So how long will it take for a child to vomit after a head fall? After a child’s head fall is generally then will be fine, if the baby really fell uncomfortable, should be within a day or two, there is a headache, vomiting phenomenon, to observe the baby fell to the place there is no bleeding, if there is a serious brain trauma, may lead to vomiting symptoms within a day. It should be determined on a case-by-case basis. Generally speaking, if a small child falls accidentally, it should depend on the specific area and the mental state of the child, and not every child who falls on the head will experience vomiting. If a child has nausea and vomiting symptoms after a head fall, it will have an impact on the child’s healthy growth and may lead to complications in other areas, so it is best to get reasonable treatment. If a child has vomiting symptoms after a head fall, it is usually caused by a mild concussion, or it may be due to vomiting caused by bleeding in the head, and should be promptly brought to the hospital and determined by examination. If the traumatic brain injury is serious and jet-like vomiting occurs, the presence of increased cranial pressure should be considered, which requires a surgical visit to the hospital and requires brain CT and MRI examinations to clarify.