I'm struggling with some health issues and I'm not sure what to make of them. I've been dealing with wheezing and trouble breathing, along with a dry cough. At first, I tried treatment for GERD, but it didn't help. This has been happening on and off for about 4 years now. What worries me even more is that since last year I've noticed I'm urinating a lot more and it's really diluted, plus I'm feeling dehydrated. My plasma osmolality is 320. Are these signs related to something specific? My kidney, liver, and thyroid functions all checked out normal, and so did my CBC. What could be going on here?