His personal physician -- Dr. Conrad Murray -- told investigators he gave Jackson nightly infusions of propofol to treat his insomnia.

CNN: Elvis' ghost haunts Michael Jackson death trial

Jackson died on the morning of June 25, 2009, after a long, sleepless night in which Murray used sedatives and propofol to treat his insomnia, according to court testimony in the doctor's criminal trial.

CNN: SHARE THIS

The lawsuit contends that AEG Live executives missed a series of red flags warning them that Jackson's life was at risk because of Dr. Murray, who was giving him nightly infusions of the surgical anesthetic propofol to treat his insomnia.

CNN: SHARE THIS

Dead Poet's Society, Dead Again, Moscow On The Hudson, Awakenings - he CAN play it without laughs, and his Finch of Insomnia is possibly the best straight role he's done.

BBC: Insomnia: Your views

After his career, he suffered from dementia, depression and insomnia, according to his wife, Mary Ann.

WSJ: Junior Seau: NIH Study Finds Football Star Had Brain Disease

Thinking he was suffering from insomnia, his family doctor suggested zolpidem to help him sleep.

FORBES: Molecules, Money, and Ambien Awakenings

Forbes.com spoke with Wales about his search engine's flubbed first act, his plans for its next phase and his occasional wiki-induced insomnia.

FORBES

During the mid-1990s, he began to show emotional instability and developed insomnia that afflicted him until his death, the suit said.

CNN: January 24, 2013 -- Updated 1044 GMT (1844 HKT)

"My entire approach may not have been an orthodox approach, but my intentions were good, " Murray told Cooper about his use of propofol to treat Jackson's insomnia as he prepared for comeback concerts.

CNN: SHARE THIS

Along with the Northern Ireland Sports Council, they have even agreed to pick up the bill for his sessions with a sleep specialist as McKee has been afflicted by insomnia for several years.

BBC: 2003 was the best and worst of times for Paul McKee.