That you have a diagnosis

is important. Should there be an auto-immune component to it is also important as it could trigger other medical issues, or if genetic – other faulty operating systems, so to speak.
It should be almost expected, in a way. You have good support here, you are getting good advice, and you are getting good treatment…the best there is for what you have.
As for that pain issue? My CIDP is primarily sensory, and it is painful, it doesn’t let up. It just comes with the territory, so to speak. Hang on, you will find the physician that helps you manage that pain. Most likely through physical therapy, medications and pain management techniques. It takes time tho. If I can manage my pain, I’m more than sure you can as well.