The flu, or influenza, is a viral infection that primarily affects the respiratory system. Common symptoms include:
1. Fever and Chills: A sudden high fever is often one of the first signs.
2. Cough: A dry, persistent cough is typical.
3. Sore Throat: Throat discomfort or pain can occur.
4. Muscle Aches: Body and muscle aches, often severe, are common.
5. Fatigue: A feeling of extreme tiredness and weakness.
6. Headache: Intense headaches may accompany other symptoms.
7. Runny or Stuffy Nose: Nasal congestion or a runny nose can occur.
8. Gastrointestinal Symptoms: Some people, especially children, may experience nausea, vomiting, or diarrhea.
If you suspect you have the flu, it's important to rest, stay hydrated, and consult a healthcare provider if symptoms worsen or do not improve.