How do you deal with Allergic Rhinitis?

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Someone very dear to me is suffering from allergic rhinitis. He's nose is easily irritated with dust and abrupt climate change. He's nose also reacts when he takes a bath early in the morning. He would suffer from runny nose and would sneeze a lot. Sometimes his nose would drip throughout the day. I know its really inconvenient for him as well as embarrassing but they said there is no guaranteed cure for it. He doesn't want to go through an operation. So he just live with it. A friend suggested acupuncture but we were not able to try it yet. Do you have any suggestions, recommendations or tips on how to prevent rhinitis attacks? What can I do to help him deal with it? What medicines can best help alleviate the effects of rhinitis? Feel free to post your response or reaction or anything you want to say about this topic. Thanks. :D