Itchy throat and dyspnea may be caused by allergic laryngitis, acute pharyngitis and bronchial asthma. 1. Allergic pharyngolaryngitis: when allergic pharyngolaryngitis is in acute attack, resulting in congestion and edema of the mucous membrane of the throat, which in turn causes obstruction to the respiratory tract, it may show itchy throat and difficulty in breathing. 2. Acute pharyngolaryngitis: may be related to viral or bacterial infections, can be an acute attack, causing irritation to the throat area, causing throat itching, and can lead to laryngeal edema, which will cause breathing difficulties, may also be accompanied by throat pain, hoarseness and other symptoms. 3. Bronchial asthma: the disease is a chronic inflammatory response of the airways, when the patient comes into contact with pollen, dust mites or animal hair, it is likely to trigger an attack of bronchial asthma, which may cause itchy throat, dyspnea, may also be accompanied by chest tightness, shortness of breath and other symptoms. Itchy throat dyspnea, may also be related to other factors, it is recommended to go to the regular hospital as soon as possible to diagnose the cause of the disease, give targeted treatment.