I asked My Wife, MD (tm) to use a spare caster to do some soft tissue work on my back. On the left side, right when she hit what she called the "subscapular", my pinky and ring fingers on my left side went numb. We tried it a bit and it was like a button, if she hit it my fingers went numb. She says that's a pinched nerve, and recommended an orthopedist.
The saga continues...
Oooo, now that's interesting. I suggest that this isn't really a pinched nerve (I'd be hard pressed to suggest anatomy to support that idea) but an example of a true trigger point. The term "trigger point" has been used to mean any spot in a muscle that is tender and "triggers" a reaction in the subject, but originally it implied a point which when stimulated caused pain or other symptoms in a predictable location remote, and without obvious neural connection with the point that was being stimulated. There are manuals that list common patterns for these patterns. Most of the "points" in the manual are, in my experience, places that are commonly tender, but I haven't often found the predicted patterns of referred pain or symptoms. Various kinds of treatments are touted as capable of relieving these--injections of various fluids, "accupressure", and the ever-fascinating "spray and stretch" in which the muscle (where the TP is located) is stretched while the surface of the skin overlaying the TP is sprayed with a refrigerant in a specific prescribed sweeping pattern. I used to be a bit of a believer in all of that, but my passion has waned considerably in recent years. But, hmm, interesting.
Was you wife saying "subscapularis"? That's the name of a muscle.