Flu Symptoms

The flu is characterized by a collection of symptoms that can often occur suddenly, including:

1. Fever (higher than 100° F)
   A fever occurs when your body temperature increases in response to illness or injury. Your temperature is considered elevated when it is higher than 100°F.
2. Chills
   Body chills that are not related to a cold environment can be a sign of the flu.
3. Headache
   A headache associated with the flu may appear suddenly, and be related to body aches or nasal congestion you're experiencing.
4. Extreme tiredness
   It's normal to feel tired at the end of a long day or when you don't get adequate sleep, but unexplained tiredness can be a sign of the flu.
5. Dry cough
   Know your cough. A productive cough (coughing up mucus) is common with a cold, while a non-productive or dry cough (with no mucus) is associated with the flu.
6. Sore throat
   Swelling in the throat can lead to a sore throat.
7. Runny nose
   Runny nose may also occur but is more common in children than adults.
8. Muscle aches
   While it is normal to feel body aches from physical overexertion, body aches that are sudden and unexplained can be a sign of the flu.
9. Stomach symptoms
   Stomach symptoms such as nausea, vomiting and diarrhea are more common in children than in adults
10. Chest discomfort
    Chest discomfort is often severe with the flu.