When the acid reaches your esophagus, it can cause a burning sensation that makes you cough. Pneumonia is a lung infection caused by viruses, bacteria, or other substances that enter your lungs. The ...

Chronic pharyngitis—also known as a chronic sore throat or persistent sore throat—is a sore throat that lasts several weeks or longer (sometimes 12 weeks or more). It can also occur as a sore throat ...

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