Dry and itchy neck and cough are clinical symptoms and can be seen as a result of some diseases, such as chronic pharyngitis. Cough variant asthma belongs to allergic cough, there may be chronic bronchitis, chronic allergic pneumonia, it is recommended that at this time you can test the blood routine, if necessary, through the chest X-ray, check the lung function and allergens, you can also check the head CT, to see if there is a combination of allergic allergic rhinitis, sinusitis, etc., to clarify the cause, and then do targeted etiological treatment.