These days feel throat scratchy all the time, ceaseless cough, what reason be excuse me

I feel itchy throat for several days in a row, and keep coughing, mostly caused by pharyngitis, related to alcohol, smoking, inhalation of irritating gases and other factors. It may also be caused by laryngitis, related to excessive use of sound, food allergy, throat foreign body and other factors. In addition, it cannot be ruled out that it is the cause of cough variant asthma and other diseases.