The perils of fame: struggling with painful pasts, overnight success and other demons, countless A-listers -- from former child stars like Lindsay Lohan to Oscar winners like Robert Downey Jr. -- have sought help at rehab. Click through to see more celebs who've gone to rehab
After a meltdown and hospitalization in 2011 after partying for nearly two days with porn stars he dubbed "goddesses," Sheen entered rehab causing a halt in production on his then show Two and a Half Men. He was later fired by CBS in March 2011. The actor previously entered rehab twice before, once in 1998 and again in 2010.