Dry cough in fall may be caused by upper respiratory tract infections, allergic respiratory diseases, drug effects, gastroesophageal reflux disease and so on. 1. Upper respiratory tract infection: the climate in the fall is changeable, the temperature difference between day and night is big, it is very easy to get cold to make the body’s immunity decline, triggering upper respiratory tract infectious diseases such as colds, etc., the symptoms of dry cough. 2. Allergic respiratory diseases: cold air in the fall, and the climate is dry, easy on the respiratory mucosa stimulation, triggering allergic diseases such as allergic rhinitis, bronchial asthma, etc., causing symptoms of dry cough. 3. Drug effects: some patients taking angiotensin-converting enzyme inhibitors, dry cough symptoms may occur. 4. Gastroesophageal reflux disease (GERD): when the anti-reflux mechanism of the stomach and esophagus is weakened, the refluxed material will irritate and damage the respiratory tract, triggering the symptoms of dry cough. In addition, there are other causes of dry cough. It is recommended to consult a doctor to identify the cause of the dry cough and to treat it according to the cause of the disease under the guidance of the doctor. During the treatment, you should follow the doctor’s instructions, do not take medication on your own, so as not to delay the condition and make it worse.