What happened to Demi Lovato?

The teen queen, 17, posted a photo on her Twitter page showing her bloodied and scratched with an IV in her arm. ("Demi Interrupted," she wrote.)

Relax - the photo is from her upcoming gig Grey's Anatomy.

She plays a patient who is being treated for possible schizophrenia by Seattle Grace's Alex Karev (Justin Chambers) and Arizona Robbins (Jessica Capshaw).

Lovato's episode airs next month.