Question
My child is two weeks old and has been running a high fever recently. The medicine and intravenous fluids work temporarily, but the fever comes back after the effect wears off. Occasionally, there is dry vomiting and a continuous runny nose. After going to the hospital for check-ups and tests, everything was normal. I would like to know what could be the cause?
Answer
Based on the situation, it may be a case of persistent fever. Recommendations include: There are various diseases that can cause persistent low-grade fever in children, including organ diseases and functional endocrine disorders. In terms of organ diseases, chronic infections are most common, such as pediatric tuberculosis, chronic pyelonephritis, chronic sinusitis, and certain parasitic diseases. For infections that cause low-grade fever, treatment should be targeted at the pathogen. Many non-infectious factors can also lead to persistent low-grade fever, such as child anemia, malignant tumors, hyperthyroidism, systemic lupus erythematosus, etc. A detailed examination should be conducted to determine the cause and active treatment of the primary disease. If the test results are normal, it may be functional low-grade fever, which is when the child’s body temperature is between 37.4°C and 38°C and persists for more than two weeks.