Allergic cough is a cough caused by exposure to an allergen. Asthma is a common cause of allergic cough and usually results in a cough in the morning or at night, but without phlegm. Allergic cough is a more persistent cough and is longer, lasting more than 3 weeks. There are more allergens, dust, pollen, irritating smells, animal fur, food, etc., that can cause an allergic cough. This cough mostly occurs in autumn and winter and is severe in the early hours of the morning and at night. In addition to treating allergic cough, you should also pay attention to keeping the room ventilated, taking more rest, avoiding emotional excitement, and not eating foods that are allergy-prone.