What is allergic rhinitis?What are the main signs and symptoms of allergic rhinitis?How is allergic rhinitis diagnosed?What are some of the main medical treatments for allergic rhinitis?Have any supplements been studied for allergic rhinitis?How could diet affect allergic rhinitis?Are there any other treatments for allergic rhinitis?What causes allergic rhinitis?What probiotic strains have evidence for efficacy for hay fever?What is the difference between cold, flu, and allergic rhinitis symptoms?