What causes fever and vomiting in children?

Fever and vomiting in children may be caused by various factors, mainly including: 1. Respiratory tract infection: One of the most common causes. After infection and subsequent congestion and edema of the throat, the vomiting reflex is stimulated, leading to vomiting. Inflammatory markers such as complete blood count should be examined, and intravenous hydration and antiemetic treatment may be required. 2. Acute gastroenteritis: Besides fever, vomiting and diarrhea are prominent. It may be related to improper diet or infection. Complete blood count and stool routine tests are necessary, and treatment including intravenous hydration and antiemetics should be administered according to the situation. 3. Intracranial infection: Such as encephalitis or meningitis. Besides fever, symptoms such as vomiting and headache are commonly present. Blood and cerebrospinal fluid tests are required, and corresponding treatment should be given based on the results. When children display such symptoms, timely medical consultation is recommended to determine the exact cause and implement targeted treatment.