Dry and sore throat and cough may be caused by chronic pharyngitis, acute pharyngitis, reflux pharyngitis and other diseases. 1. Chronic pharyngitis: The symptoms of all types of chronic pharyngitis are roughly similar, such as discomfort in the pharynx and the appearance of a dry and painful throat. As the back wall of the pharynx is often stimulated by thick secretions, frequent irritating coughs often occur, and there is often no secretion coughed up when coughing, i.e. dry cough. 2. Acute pharyngitis: acute pharyngitis due to viral or bacterial infection. The onset of acute, pharyngeal congestion, edema can compress the glands, leading to a decrease in secretion of the pharyngeal cavity occurs dry, stimulate the sensory nerves to produce pharyngeal pain. The mucous membrane of the posterior wall of the pharynx is sticky, causing a foreign body sensation in the throat and coughing symptoms. 3. Reflux laryngitis: gastric reflux to the throat can corrode and irritate the local mucous membrane, resulting in an inflammatory reaction, and the occurrence of sore throat, dry throat and irritating cough. Dry throat cough, there may be other diseases, it is recommended that patients go to the hospital, clear cause for treatment.