Anyone have experience with Bicipital Tendinitis

My wife had some similar shoulder pain(tingly sensation and some muscle pain) that bothered her for a long time. Not sure of the exact diagnosis but the doctor sent her to physical therapy. Physical therapist said it was from a nerve running through her armpit area(don't remember the name) but reaching it was a real trick. Involved pinching in the armpit/lat area. My wife said the improvement was instant. Some basic exercises with assistance from a foam roller and now she never has issues. She stays active and works out allot so that helps too I am sure.

No idea if you have the same thing but there is hope. Sometimes the solution is not obvious though.