Mischa Barton has been placed under involuntary psychiatric hold, Access Hollywood reports, citing a source.

According to Access, the 23-year-old actress is at Cedars-Sinai Medical Center in Los Angeles.

Her rep declined to comment on the report, but tells PEOPLE: "Mischa has been hospitalized per the recommendation of her doctor and is resting in the hospital."

On Wednesday, Barton called police at 3 p.m. with a health problem, LAPD Officer April Harding confirmed to PEOPLE. "We assisted her with a medical issue and removed her from her home," says Harding. She adds that no paramedics were involved and no arrests were made, but confidentiality laws prevent her from revealing details about Barton's condition.

http://www.people.com/people/news

Get Well Mischa

http://www.fame10.com/entertainment/15-celebrities-who-will-never-make-a-comeback-in-hollywood/12/

4. Mischa Barton (http://www.fame10.com/entertainment/7-former-hollywood-it-girls-whose-careers-totally-fizzled/7/)

Everyone loved her as Marissa Cooper in “The O.C.” but, after leaving the show back in 2006, Mischa Barton has faded into oblivion. She has surfaced only a few times since. Barton made headlines when was arrested for a DUI in 2007. In 2009, she was in the news again when she placed on a 5150 psychiatric hold. In 2009, Barton was on the short-lived series “The Beautiful Life;” however, her hospitalization definitely overshadowed that. Barton has never received the level of fame that she achieved on “The O.C.” Can she make a comeback? Probably not.

Former TV Starlet & Now Ms Nobody Mischa Barton Sues Mother for Verbal Abuse, Breach of Talent Management Contract (http://www.lipstickalley.com/showthread.php/857357-Former-Tv-Starlet-amp-Now-Ms-Nobody-Mischa-Barton-Sues-Mother-for-Verbal-Abuse-Breach-of-Talent-Management-Contract)