Re: Myofascial damage/disease
You've primarily got shoulder issues, right?
Myofascial problems don't have much to do with myositis, I'm afraid.
The #1 thing with this is to learn to perform self-release on your trigger points. I found the "trigger point manual" to be a book of great value. And my current personal trainer is really clever at dealing with them. Find a massage therapist or similar professional who knows the release techniques well. With a severe case in one particular area, consider trigger point injections.