Now, just as Phil Mickelson was about to make the move to replace Tiger Woods in the standings, as the number one golfer on the PGA tour, his golf game has fallen into a severe slump. Yesterday, the world learned the reason why. Mr Mickelson revealed, on Tuesday, that he has psoriatic arthritis, which is a painful condition that could make playing the game of golf very difficult.

But, Mr. Mickleson told the Associated Press, "For five or six weeks, I was a little unsure of how this was going to affect me long term, career, what have you. Now that I feel confident it's not going to affect not only the rest of my career or the rest of my life, but even in the short term it shouldn't have an effect".

In the video, Mr. Mickelson says, 'psoriatic arthritis causes the immune system to attack the body's joints and tendons." He says, he is on medication that brings the illness under control. See the video.