The cause of allergic cough is not yet clear and may be related to genetic defects. Some triggers such as excessive talking can induce allergic cough. 1. A chronic cough that occurs after a patient is exposed to certain allergic factors is called anaphylactic cough. It is mainly characterized by paroxysmal irritating dry cough. Its pathogenesis is not yet clear, it may be due to the existence of certain genetic defects in the patient, resulting in the immune system dysfunction when subjected to certain exogenous stimuli, thus causing cough symptoms. 2. Common triggering factors, such as cold air, dust, irritating gases, excessive speech, oil smoke, etc., can induce anaphylactic cough. When allergic cough occurs, it is recommended to go to the hospital and choose the appropriate method of treatment under the guidance of the doctor.