What is the reason for the old cough before going to bed at night

The patient often coughed before going to bed at night. It was considered that the patient had chronic pharyngitis, bronchitis, pneumonia and other diseases, which would lead to cough before bed. It was also considered that the patient had gastroesophageal reflux cough. It was suggested that the patient should go to the hospital for examination as soon as possible to clarify the cause.