Itchy throat, dry cough, more reasons, may be chronic pharyngitis, acute pharyngitis and allergic pharyngitis and other diseases caused. 1. Chronic pharyngitis: due to repeated episodes of acute pharyngitis, stimulation of adverse physical and chemical factors, various nasal diseases and chronic inflammation of the respiratory tract, long-term open-mouth breathing and inflammatory secretions repeatedly stimulate the pharynx, or by chronic tonsillitis, periodontitis, can be caused by chronic pharyngitis, can cause pharyngeal mucous membrane congestion and swelling, resulting in itchy throat, cough and other uncomfortable symptoms. 2. Acute pharyngitis: it may be due to viral and bacterial infections, the throat is stimulated by inflammatory secretions and inflammatory factors, resulting in acute edema and congestion of the mucous membrane of the pharyngeal cavity, thus causing the above symptoms. 3. Allergic pharyngitis: mainly after contacting or ingesting allergens, it triggers an allergic reaction, resulting in a dry, itchy cough in the pharynx. Itchy throat and dry cough can also be seen in reflux pharyngitis, upper airway cough syndrome, etc. It is recommended that patients actively seek medical attention to clarify the cause.