On the Grey's Anatomy Set with Demi Lovato

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Grey's Anatomy makes you want to claw our eyes out.

Just kidding ... unless you're Demi Lovato. The guest star was obliged to as part of her role on the show next month. As you can see, her patient character is not in a good place - mentally or physically - as evidenced by these self-inflected scratch marks:

Demi Lovato Cut Up

Demi Lovato Tweeted this picture for all to see.

In case you haven't heard, the Disney Channel star and girlfriend of Joe Jonas plays a schizophrenic, but she's in good hands with Dr. Alex Karev (Justin Chambers).

The dramatic episode airs May 13, one week before the two-hour season finale.

Follow this link for scoop we previously reported regarding Demi on Grey's.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.


Grey's Anatomy Quotes

MEREDITH: "You don't get to call me a whore. When I met you, I thought I had found the person that I was going to spend the rest of my life with. I was done! All the boys and all the bars and all the obvious daddy issues, who cares? I was done. You left me. You chose Addison. I'm all glued back together now. I make no apologies for how I chose to repair what you broke. You don't get to call me a whore."
DEREK: "This thing with us is finished. It's over."
MEREDITH: "Finally."
DEREK: "Yeah, it's done."
MEREDITH: "It is done."

CRISTINA: "There's a club. The Dead Dads Club. And you can't be in it until you're in it. You can try to understand, you can sympathize. But until you feel that loss... My dad died when I was nine. George, I'm really sorry you had to join the club."
GEORGE: "I... I don't know how to exist in a world where my dad doesn't."
CRISTINA: "Yeah, that never really changes."