It is recommended to measure a child's temperature rectally for the most accurate results, especially at a young age. A temperature below 38 degrees Celsius is not considered a fever, so there is no need to worry unless the fever persists for more than 72 hours. Nasal saline hygiene can help with nasal congestion and cough, and can be used before bedtime. Consult a doctor if the fever lasts for more than 72 hours, even if medication has been taken to reduce the temperature.
