Suggest Treatment For Chronic Allergies, Dry And Itchy Nose With Mucus Congestion

Can you please provide best allergist at kolkata? I am suffering since 2005 & no relief.. Severe dry & etching nose; pressure at nose & storage of mucous all the time and need to secrete through mouth always.. Day by day it is increases & unbearable to live. Is there any Dr in this world who can help me to cure & lead a normal life; I will obliged to him/her through out my life.