What is a high fever in a four year old?

A high fever in a four-year-old is typically defined as a body temperature of 102°F (38.9°C) or higher. It's important to monitor for any accompanying symptoms, such as irritability, lethargy, or difficulty breathing, as these could indicate a more serious condition. If the fever persists for more than a few days or is accompanied by severe symptoms, it's advisable to consult a healthcare professional. Always use a reliable thermometer to measure the child's temperature accurately.