have recurrent episodes (with no back pain). , this is 3rd year. usually self resolves, but takes 2-3months to do so. been trying to keep it off. here is what I've researched, and I would be curious if you had success with it.
1) Physical therapy - temporary improvement, but does not seem to...
Coach Greg Mihovich and Sergei Karaliou show really interesting stretching and rehab exercises for tendonitis, lower back pain, shoulder issues, etc.