A dry, tickling cough in the throat all the time may be caused by allergic pharyngitis, chronic pharyngitis, reflux pharyngitis and other factors. 1. Allergic pharyngitis: If you come into contact with allergy-prone substances, resulting in an allergic reaction, you will have the symptom of dry cough and itchy throat. 2. Chronic pharyngitis: repeated episodes of acute inflammation and stimulation by adverse physical and chemical factors can cause edema and hypertrophy of the mucous membrane and submucosal tissues of the pharynx, increased nerve sensitivity, and inflammatory factors can cause irritation of the throat, resulting in a dry cough and an itchy throat. 3. Reflux laryngitis: acid reflux on the throat area caused by irritation, can also lead to dry cough throat itchy symptoms. Dry and itchy throat cough may also be other reasons, it is recommended to actively consult a doctor after the onset of standardized diagnosis and treatment.