<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been having a lot of joint pain in my arm and wrist lately. Its starting to really bother me. What do you think it could be?  <response>: Based on your symptoms, it sounds like you may be suffering from lateral epicondylitis or tennis elbow. This is a condition that causes pain in the lateral or outer part of the elbow and can also affect the wrist and arm. 