Mischa Barton reveals what led to her stint in rehab

British actress Mischa Barton has revealed what led to her being admitted into a rehab.

Barton, 23, revealed that the travelling she had to do abroad for her work, and the surgery she had to undergo to remove four of her wisdom teeth, was just too much for her to handle, and she ended up getting admitted into Cedars.

"Yeah, I went through a tough spot where everything compounded on me, and it was like a perfect storm, like everything was happening to me at once," Time Out New York quoted her as saying in an exclusive interview.

"The show, travel and then this fairly routine surgery that went wrong-it's still just healing. But I had to get through it without proper painkillers because I couldn't take those during work. So it's been a nightmare.

"I was down in the dumps about everything there for a while. Sometimes you have to hit rock bottom about things and have to get the most stressed-out just to feel better again.

"I got completely stressed-out and couldn't handle everything, and now I feel really in control," she added.

Asked whether she had an official nervous breakdown, Barton revealed that she had no idea what happened.

"I don't know. I don't know. I had a friend who had a quasi-nervous breakdown, but I'm not sure it's the same thing. I'm not sure I'm capable of a full-on nervous breakdown, but it was pretty bad," she said.

"It didn't last that long. It was more about the pain. I have a newfound respect for people who have chronic pain. I started getting migraines," she added.