So I am still on Xolair, which I was started on due to severe CSU because of my MCAS - started in late August 2021 (I think, lol). It has also massively helped my Asthma. I'm happy to say that my allergist (who manages my CSU and MCAS), is keeping me on Xolair for the forseeable! This is a huge thing because usually they take you off of Xolair after six months if you're on it for CSU, but they're keeping me on it due to how helpful it is for managing my MCAS difficulties!
Unfortunately, did find out that the long term Prednisolone (and Gastroparesis + Anorexia) led to osteoporosis/osteopnia, so that's a bit of a bummer. But all in all, I'm doing well (aside from this small flare I'm currently in lol).
Hope everyone is doing well.