Any good method to cure the chronic rhinitis

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Hello,everybody, i have a uncle who suffers from chronic rhinitis for 10 years.He have tried many kinds of drugs for rhinitis which spent all his saving.However,he still keeps sneezing and blowing his nose all day.Due to having too much medication and spray,he nearly has lost the right to sleep and the sense of smell and taste.i am sorry to see his pain from chronic rhinitis.Recently i saw a website of selling chronic rhinitis treatment instrument.It is http://chronicrhinitistreatment.com/. The product seems wonderful.i want to buy one for my uncle.any advise?have you hear it or use it.