I have a shoulder injury - possible minor rotator tear -that has been bothering me lately, my chiro did some
gua sha -
https://www.google.com/search?q=gua+...ua+sha&tbm=vid
and
kinesio taping -
https://www.google.com/search?q=knei...taping&tbm=vid

Might be worth trying.. if you are flexible or have a friend to help , you can put on the tape & even do the gua sha yourself after seeing how it is done..