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- Sore throat
- Cough
- Nasal congestion
- Fatigue
- Fever
4. Sinusitis
Inflamed or infected sinuses can produce thick mucus that drains down the back of the throat—a condition known as postnasal drip.
Symptoms may include:
- Facial pressure
- Nasal congestion
- Thick nasal discharge
- Bad breath
- Headache
5. Dry Air and Dehydration
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