The dangers of long-term pharyngitis are as follows: 1. ear inflammation: germs enter the middle ear via the pharyngeal tube route and can lead to otitis media. 2. nasal inflammation: germs travel through the nasopharynx to the nasal cavity and sinuses and can cause rhinitis and sinusitis. 3. respiratory inflammation: germs progress downward and can cause tracheitis, bronchitis, and epiglottitis. 4. other diseases: acute attacks of pharyngitis may cause acute nephritis, rheumatic fever, and sepsis. 5. The patient has pharyngitis, to actively treat, usually pay attention to adhere to outdoor activities, quit smoking, quit drinking, keep the indoor air fresh, drink more water, eat more fresh fruits and vegetables.