@januaryjane
I have been doing saline nasal rinses and nasal steroid (XHANCE) sprays for years now.

I found I was developing sores and cruste areas inside the nose. What I found I was doing was pushing the side of the nossle against side of nose and was causing irritation.

Your symptoms were the same as mine.

What I did to solve mine was to be a lot more careful and keep the nossle in middle of nose and do not push it against the sides of nose. I did this for several days and the irritation, sores, crusting slowly went away.

I am giving you what caused mine and what I did to resolve it. It may or may not be what is causing yours but passing on my experience with this.