Dry mouth, itchy throat and cough may be caused by reflux pharyngitis, upper respiratory tract infection, chronic laryngitis and other diseases. 1. Reflux pharyngitis: the reflux of stomach contents and acid into the throat cavity can damage the local mucous membrane and stimulate the nerves, which in turn leads to dry mouth, itchy throat and coughing symptoms. 2. Upper respiratory tract infection: viral and bacterial infections cause inflammatory reactions in the upper respiratory tract, dry mouth, itchy throat and cough will occur, the patient’s nasal secretions will increase, causing runny nose, nasal congestion, accompanied by headache, fatigue and other adverse symptoms, may also cause pharyngeal pain, pain varies from person to person, with the development of the disease, there will be a fever. 3. Chronic pharyngitis: chronic pharyngitis will often feel dry mouth, accompanied by itchy throat, cough, sore throat and other adverse symptoms, the throat will appear obvious blockage, burning sensation and other discomforts, swelling of the throat is more serious, may cause breathlessness. It is recommended to go to the hospital in time for relevant examinations, after a clear diagnosis, actively cooperate with the doctor for treatment to avoid aggravation of the condition.