After shooting 78, lefty goes public!

Mickelson revealed Tuesday he has psoriatic arthritis, which causes his immune system to attack his joints and tendons and produced such intense pain he couldn't walk. He noticed the first symptoms five days before the U.S. Open, and the pain eventually got so bad he made a visit to the Mayo Clinic.

Weekly shots have brought the disease under control, and Mickelson said there shouldn't be any negative impact on his long- or even short-term health.

"I'm surprised at how quickly it's gone away, and how quickly it's been able to be managed and controlled," he said. "I feel 100 percent, like I say. But when I'm laying there on the couch and I can't move, you know, yeah, I had some concerns. But I feel a lot better now."

As if that bombshell wasn't enough for the day, Lefty dropped another one: the burger connoisseur is now a vegetarian.