Question
A three-year-old child fell and hit their head, experiencing vomiting on the same day. After a CT scan, the doctor said there were no issues. However, the child continued to vomit. The next day, another CT scan was conducted and no abnormalities were found. The vomiting stopped after treatment, but it occurred again in the morning of the third day. How should one respond?
Answer
Based on the description, this situation may be related to a concussion. A concussion is a temporary brain dysfunction that occurs immediately after a head injury, with its pathological changes not being clearly defined and its mechanism of occurrence still controversial. Clinical manifestations include brief loss of consciousness, retrograde amnesia, and symptoms such as headache, nausea, and vomiting, with no positive signs on neurological examination. Concussion is the mildest form of brain injury and can usually be cured with appropriate treatment.