People complain of pain under the shoulder blade that can’t be reached. It aches fairly constantly. This pain can become so vague, unreachable and constant that people do not consider it in their pain patterns anymore. When that happens, and this trigger point continues to worsen, people begin to complain about the elbow and wrist pain.
This pattern becomes more active when the person reaches forward, and the shoulder-blade presses into the muscle as when reaching out while using the computer mouse or reaching out for the top of the steering wheel while driving.
People may primarily complain about the wrist pain as it bothers them when they use the computer mouse. They almost always admit to the shoulder pain when asked. They have concerns about carpal tunnel as this often bothers them more when they are reaching for a mouse. (there are a number of more common causes of wrist pain).
People seldom primarily complain of the elbow pain. I remember a few of these cases when I thought that it was so unusual that elbow pain was relieved by working this trigger point when they never complained of shoulder pain.