Why do I have right wrist pain when I swing a golf club or bend it a certain way?

I have a sharp pain in my right wrist but it only happens when I twist or roll my wrist/hand a certain way. I get the pain at the start of the second half of my golf swing where you roll your wrists. It is usually a sharp pain when I hit the ball as well. The pain is on the back of my wrist and when i bend my wrist forward i can see a little bit of inflammation. What could it be?

Related posts:

1. What is meant by a cupped wrist in the golf swing?
2. What should the wrist hinge feel like in the golf swing?
3. Notes: Glasson overhauls swing to avoid pain
4. How To Swing The Golf Club On Plane Correctly
5. How do i keep the club face closed on my golf swing?