Inclusion criteria
assessment;②, cough
All patients included in the study must meet all of the following criteria:① Patients or their legal representatives must sign an ICF before any assessment;② 18 years ≤ age ≤ 60 years, male or female;③ Patients with chronic cough whose main symptom is cough, whose cough has lasted for more than 8 weeks, and who have no obvious abnormality in the frontal or lateral chest X-ray. A comprehensive examination according to the diagnostic procedures of chronic cough recommended by China's ④ Subjects with a cough VAS ≥ 30 mm;