Symptoms Of Flu 2024. Flu can cause mild to severe illness, and at times can lead to death. It causes symptoms like head and body aches, sore throat, fever and respiratory symptoms, which can be severe.

In many cases they may share similar symptoms, including cough, runny nose, sore throat, fever, headache and fatigue. Contact your healthcare provider if you have or someone you know has any of the following severe symptoms, including: