A look at actor Charlie Sheen's legal and personal troubles:
December 1996: Sheen was arrested and charged with attacking his girlfriend at his Southern California home. Sheen pleaded no contest to the charges and was placed on two years' probation.
May 20, 1998: Sheen overdosed after trying to inject himself with cocaine, for which he was hospitalized. His father, actor Martin Sheen, turned him in for violating his parole and issued a public appeal for his fans to pray for his son. Sheen was sent to rehab.
Dec. 25, 2009: Sheen was arrested in Aspen, Colo., on charges of domestic violence, including assault and menacing, against his wife, Brooke Mueller. She reportedly told police that he had held a knife to her throat and threatened to kill her. Three months later, he was charged with felony menacing, and assault and criminal mischief, both misdemeanors.
February 2010: Production of "Two and a Half Men" was halted as Sheen checked into what was termed "preventative" rehabilitation.
Aug. 2, 2010: As a part of a plea bargain for his December '09 arrest, Sheen pleaded guilty to misdemeanor assault and the other, potentially more serious charges were dismissed. He was sentenced to 30 days in a rehabilitation center, 30 days of probation and 36 hours of anger management. Also, he was barred from possessing guns for the rest of his life.
Oct. 26, 2010: Sheen was ejected from the Plaza Hotel in New York after he reportedly caused several thousand dollars' worth of damage to his room and admitted to drinking and taking cocaine. A woman, porn star Capri Anderson, was locked in the bathroom. She later filed a complaint saying that she had been assaulted and harassed by Sheen. His publicist said at the time that an allergic reaction to medication was to blame.
Jan. 12, 2011: Sheen missed rehearsals for "Two and a Half Men" reportedly because of a severe ear infection.
Jan. 27, 2011: Sheen was hospitalized for severe abdominal pains. His publicist later said it was because of a hiatal hernia.
Jan. 28, 2011: Sheen was checked into an undisclosed rehabilitation clinic, with "Two and a Half Men" placed on a production hiatus.
—Compiled by Rick Rojas, Yvonne Villarreal and Julia Franco