I HAVE REGULAR PAIN IN LEFT SHOULDER TO WRIST. I HAVE NO ANY INJURY IN HISTORY. I AM CAR DRIVER. WHAT SHOULD I DO TO OVERCOME THIS PAIN.

Arm pain. The pain in the shoulder down to wrist could be from tendinitis, adhesive capsulitis of the shoulder joint. You are young, some times injury can not be recalled. You may need physical therapy, anti inflammatory medicines like motrin, aleve (naproxen) might help with the pain, see an orthopedic specialist.