Some years ago i stayed 9 months without touching a racket due to TE (thanks to wilson hammer 5.3 and my ignorance).
No cortison injections, but daily streching exercises.
This is a simple and good one: http://www.youtube.com/watch?v=fsJJQsvW7mA
See your doctor for advises, do not underestimate the pain, as i did.
I was playing and all of a sudden i hit a forehand and i felt an acute pain on my elbow and i wasn't able anymore to hold the racket.
Now I'm playing again but i will never forget the experience.
I've learned to decrease the tension of the racket and no more superlight head heavy stiff rackets.