Asthma, itchy airway, coughing out, coughing when talking, and basically not coughing outdoors during the day. Cough badly at night!

From your description and treatment, it is estimated that cough variant asthma is caused by allergic factors. Although you have used many drugs, such as ketotifen and Kechuan tablets, the effect is still not satisfactory. I guess I'm taking medicine myself, so it's best to take medicine under the guidance of a doctor. At the same time, it's best to find out if there are allergens in the bedroom, or sleep in another room and see what happens. Cetirizine, terbutaline and compound codeine phosphate oral liquid can be used for drug treatment, and it is best to combine them for several days. Then only cetirizine and terbutaline sulfate were used. It's best to find out the allergen and just remove it.