Always dry cough throat itch may be chronic pharyngitis, rhinitis, reflux pharyngitis, allergic pharyngitis and other causes. 1. Chronic pharyngitis: the presence of chronic inflammation of the throat causes local tissue congestion, lymphoid follicles under the mucosa of the pharynx proliferate, so there is always a dry cough, itchy throat, foreign body sensation. 2. Rhinitis: Inflammation of the nasal cavity, increased secretions into the throat, stimulating the throat caused by itchy throat, always dry cough. 3. Reflux laryngitis: stomach acid refluxes into the esophagus, stimulating the esophagus and causing localized congestion and inflammation in the throat, so the throat is itchy, always dry cough and other symptoms. 4. Allergic laryngitis: people with allergies have allergic reactions to allergens, so they always have a dry cough and itchy throat. It is recommended to consult a doctor in time to find out the cause, according to the cause of treatment, so as not to miss the condition.