What are the symptoms of the flu?
The **flu (influenza)** is a contagious respiratory illness caused by influenza viruses. Symptoms often appear suddenly and can range from mild to severe. Here are the **most common flu symptoms**:
### **Main Symptoms of the Flu**
1. **Fever (usually high, above 100.4°F or 38°C)** – Though not everyone with the flu gets a fever.
2. **Chills & Sweats** – Often accompany fever.
3. **Cough (usually dry)** – Can become severe.
4. **Sore Throat** – Often scratchy and painful.
5. **Runny or Stuffy Nose** – Less severe than with a cold.
6. **Muscle or Body Aches** – Especially in the back, arms, and legs.
7. **Headache** – Often intense.
8. **Fatigue (extreme tiredness)** – Can last for weeks.
9. **Weakness & General Malaise** – Feeling "wiped out."
### **Less Common Symptoms (More Likely in Children)**
- **Nausea, Vomiting, or Diarrhea** – More frequent in kids than adults.
- **Ear Pain** – Due to congestion.
- **Loss of Appetite** – Common in many viral illnesses.
### **Emergency Warning Signs (Seek Medical Help Immediately)**
- **Difficulty breathing or shortness of breath**
- **Persistent chest or abdominal pain**
- **Sudden dizziness or confusion**
- **Severe vomiting (unable to keep liquids down)**
- **Bluish lips or face** (sign of low oxygen)
- **Symptoms that improve but then return with worse fever/cough**
### **Flu vs. Cold vs. COVID-19**
| Symptom | Flu (Influenza) | Cold | COVID-19 |
|--------------|---------------|------|---------|
| **Fever** | Common (high) | Rare | Common |
| **Cough** | Dry, severe | Mild | Dry, persistent |
| **Fatigue** | Severe | Mild | Often severe |
| **Body Aches** | Strong | Slight | Common |
| **Loss of Taste/Smell** | Rare | Rare | **Very Common** |
### **When to See a Doctor**
- Symptoms worsen after 3-4 days.
- High fever lasts more than 3 days.
- You’re in a **high-risk group** (elderly, pregnant, chronic illness, weak immune system).
Would you like guidance on **treatment or prevention** (like flu shots)?
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