The symptoms as mentioned in your post suggest that you might be having Allergic rhinitis
Duonase contains Azelastine, an antihistamine preparation which provides relief from symptoms associated with allergic rhinitis.
, which takes care of the inflammation.
preparation can be used as a maintenance therapy to relieve symptoms of seasonal allergies.
If symptoms still persist, it will be better to consult an ENT specialist
Other than that...maintain adequate hydration & take a healthy balance diet.
Also make sure that you are well protected from cold, dust & other allergens.
Wishing you a good health.
Thanks & take care.