What temperature is dangerous for a 4 year old to have?

A fever in a 4-year-old is generally considered dangerous if the temperature reaches 104°F (40°C) or higher. At this level, it's important to seek medical attention as it may indicate a serious infection or illness. Additionally, any fever accompanied by severe symptoms, such as difficulty breathing, persistent vomiting, or lethargy, warrants immediate medical evaluation. Always consult a healthcare professional if you have concerns about your child's health.