Dry cough and itchy throat may be caused by cold virus invading the throat and inflammation caused by congestion and edema of the mucosa in the throat. You should drink more warm water, eat more fresh vegetables and fruits, and avoid spicy, irritating and greasy food.

It is also possible that cough variant asthma is exposed to allergens, such as pollen, dust, dust mites, etc. Inhalation of irritating gases leads to airway hyperresponsiveness, causing symptoms such as dry cough and itchy throat. Glucocorticoid can improve airway inflammation by atomization. When the lung is infected, inflammatory stimulation can also cause cough and itchy throat. Should actively anti-inflammatory and anti-infection treatment, pay attention to keep warm and avoid catching a cold.