I am suffering from allergitic rhinitis which treatment is preferred ayurvedic or allopathy or home?

This is behalf of my friend ,
“I am 25 year old Male,I have been using Duonase since 4 years now. I tried to stop it couple of times. However, i feel terrible with congestion in nose, headache .Only when i take Duonase i feel better. In addition, I had my allergen test and I stopped eating those products since the test results came back. I feel nausea and headache most times, when i return from work. I cannot run fast, gives me breathlessness. i tried to stop the medication because it has corticosteroids and Antihistamines. I have been using it then every day. However, reduced to once a day since the last two months. What can be further anticipated treatment otherwise? i can see my hair falling off, I’ve reduced weight and sometimes grow weight . Do you think these is a risk to life's expectancy because of the spray or because of the allergic rhinitis?