allergic rhinitis
"I actually have a non-allergic rhinitis and rather than my nose getting blocked it's usually my inner ears/vestibular system and just a feeling of having a fish tank over my head. I've been to plenty of ENT's over the 8 years and none of the medications they'd prescribe would work, most if the time antihistamines would actually block my head and dry out my mouth even further. This has worked the best so far, the only not so awesome thing about it is it feels like my allergy moved down to my throat and even though I'm not dizzy for the first time in years each time I breathe in through my nose it hurts a little. Still, better than anything else I tried!"