Dry and itchy throat, cough, may be the manifestation of certain diseases, such as bronchitis, allergic laryngitis, chronic laryngitis, etc., should consult a doctor in time to identify the cause of the disease. 1. Bronchitis is caused by a variety of factors in the trachea, bronchial mucosa and its surrounding tissues of inflammation; patients in the expectoration, phlegm stimulation of the pharynx caused by the throat itchy symptoms, the main symptoms are coughing, coughing up phlegm, shortness of breath. 2. Allergic laryngitis patients have allergic body, in contact with allergens (such as dust, pollen, dust mites, food, etc.), allergic laryngitis is induced, the main manifestation of the throat itching, dry cough, but also can be accompanied by nasal itching, sneezing, nasal congestion and other nasal symptoms. 3. Chronic laryngitis is mainly manifested as hoarseness, increased secretion in the throat and discomfort in the throat, while patients often take frequent throat clearing and dry cough to briefly relieve the symptoms. The symptoms of dry, itchy throat and cough may also be caused by other factors, and it is recommended that patients consult a doctor in a timely manner to clarify the cause of the disease and give targeted treatment.