The common clinical causes of dryness and pain in nasopharynx include acute nasopharyngitis, nasopharyngeal carcinoma and sinusitis. 1. Acute nasopharyngitis: this disease refers to acute inflammation of mucous membrane, submucous membrane and lymphatic tissues of nasopharynx, which is mostly seen in pharyngeal tonsils, and the clinical manifestations are mostly the precursor symptoms of upper respiratory tract infections, such as nasal congestion, pus-flowing nasal mucus, dryness or burning sensation of nasopharynx, headache and so on. 2. Nasopharyngeal cancer: this disease refers to a kind of malignant tumor occurring in mucous epithelium of nasopharynx, which usually occurs in the parietal wall and lateral wall of nasopharynx, with clinical manifestations such as nasal congestion, bloody nasal discharge, nasopharyngeal pain, abnormal swallowing activities and so on. 3. Sinusitis: this disease refers to sinus infection caused by viruses, bacteria or fungi and other pathogens, clinical manifestations of nasal congestion, runny nose, headache, etc., part of the population is also accompanied by pharyngeal itching, coughing, pharyngeal burning sensation, etc., secretion stimulation of nasopharynx can be dry and painful symptoms. For people with related conditions, if the symptoms persist or tend to worsen, it is recommended to go to the otolaryngology department of the hospital for consultation and treatment.