Golf's world number two Phil Mickelson has been diagnosed with psoriatic arthritis but says he feels 90 percent fit ahead of this weekend's U.S. PGA Championship at Whistling Straits.
The American left-hander experienced intense pain in his joints shortly before the U.S.Open at Pebble Beach in June, making it hard for him to walk.
Since consulting with specialists, however, he quickly began to recover after starting treatment and taking medication.
For a ninth successive tournament, Mickelson has an opportunity to displace Tiger Woods and needs to finish no worse than joint fourth at Whistling Straits to have the chance to take over at the top for the first time.
