In addition to the medicines which you doctor has prescribed(mainly nasal decongestants,antibiotics,
steroids etc) avoid indigestible, spicy, foods
and meats. Eat simply of wholesome food. Obtain needed out-of-door exercise, sunbaths, and swimming. It can also be treated using an antihistamine nasal spray. Antihistamine works by blocking your immune system's response to the allergen.
The golden rule for chronic stuffy nose is steam inhalation.