Dry and painful throat needs to be alert to nasal diseases, acute upper respiratory tract infections, throat diseases and so on. 1. Nasal diseases: chronic rhinitis, sinusitis and other diseases, due to sleep at night will appear snot backflow to the throat, so the phenomenon of dry and painful throat, but also accompanied by nasal congestion, open-mouth breathing and other phenomena. 2. Acute upper respiratory tract infections: Acute upper respiratory tract infections can show dry and painful throat, accompanied by runny nose, nasal congestion, coughing, coughing up phlegm and other phenomena. 3. Diseases of the throat: chronic pharyngitis, acute laryngitis, acute pharyngitis, epiglottitis and other diseases can also show dry and painful throat. After the emergence of symptoms, go to the hospital in a timely manner to improve the examination, under the guidance of the doctor to take standardized treatment, do not ignore the symptoms, take it lightly.