Sometimes a combination of therapies is the most effective.

I started playing the piano at 5 and had pain at age 11, which 
culminated in chronic tendinitis which lasted from 14-19. At times I had 
to stop playing altogether. I endured a maddening array of tests, going 
to various hospitals. I did paraffin, nerve damage tests, uncomfortable 
stretches, and biofeedback. None of this helped in the slightest.

Then at the age of 19 I discovered the Feldenkrais method. For 7 years 
and counting, the pain has not returned. After my first lesson I felt 
lighter, taller, straighter. Another recent revelation is the Taubman 
method, which is totally adding to this good physical feeling. I am 
finding that these two methods complement each other in an ideal way 
because they both put you in touch with the body.