If your child is running a fever without any other symptoms, it is important to monitor their temperature and overall well-being. It is crucial to lower the fever to prevent dehydration. You can give them acetaminophen or ibuprofen to help reduce the fever. If the fever is not responding well to one medication, you can alternate between acetaminophen and ibuprofen every few hours. Remember to follow the recommended dosages based on your child's weight to ensure their safety and effectiveness of the medication.