If you're in extreme pain or the pain persists for a number of days, see your doctor. Don't try to play through the pain or you may make it worse . Avoid a cortisone shot until you've tried everything else. Consider it a last resort, not an easy solution. The best thing you can do to prevent tennis elbow is to train and get fit before you play and not depend on tennis alone to get you into shape.
Tennis is a game of physical, mental and mechanical challenges.
The physical movement of the racket and the execution of the swing require a synchronized group of body actions, not just the swinging of the arm. Speed, strength, flexibility, endurance, nutrition and hydration all play a role in improving your game and decreasing your risk of injury. Develop Your Strength Lack of strength in your forearm muscles can lead to a tendinitis. This is especially true if your racket is too heavy for you to handle easily. In tennis, all your body parts are in motion, so before and after you play, be sure to stretch and flex all your major muscle groups.