Take a look at some of my old posts on food allergy triggers. There's a recent one to lilitiger on the current forum page. You may just have seasonal allergies, in which case maybe allergy shots could help you. They did stop my seasonal allergies cold in their tracks. But if you happen to have food allergies/sensitivities/triggers. they could cause your rhinitis and also trigger your reflux symptoms.
Hardly any doctors seem to have ever heard of food allergies causing reflux, but my current allergist says she sees it all the time. She got me started on the food log and then the challenge testing, and it stopped my reflux symptoms.
I still needed PPIs because of a bad LES, and later surgery from an accident that shoved my stomach into my chest, but the refluxing (jumping around of the stomach causing regurgitation) stopped when I found my triggers. Since surgery I no longer need acid reducers, but I still have to watch the trigger foods because they cause my stomach to jump, although it can't get acid past the new "valve." The foods also cause me to have tachycardia, so I know it's a true allergy and has nothing to do with acid.