Sore throat, swollen lymph nodes in the neck, tongue can be dangerous or not. Therefore, with the initial symptoms, it is difficult to clearly distinguish between diseases such as pharyngitis, tonsillitis... and diseases that can cause death such as nasopharyngeal cancer.

Chronic pharyngitis is also known as persistent sore throat. Unlike acute pharyngitis, chronic pharyngitis lasts for a significantly longer period of time and does not respond to conventional treatments.