i have had terribly painful trigger points around my left shoulderblade/rhomboid area for quite some time; it is a burning pain that is exacerbated by leaning on it too long (i've been sleeping in a recliner with a tennis ball behind me to try some acupressure), and also the fact that i'm in a sling. i've had trigger point injections. massage, acupuncture...you name it. yesterday my physiotherapist started question my my c4/c5 area, where i happen to have facet joint problems.
sure enough, he did a small adjustment to my neck, along with some stretching, and eased that pain substantially!
he also taped under the shoulderblade to take a little pressure off the overworked muscle, which may or may not have helped.
i thought this might be worth sharing, as i have been "treating" an area of referred pain all this time when the culprit was my neck. hope this is helpful info for someone out there!