( CNN ) -- Pop icon Michael Jackson , 50 , who died Thursday afternoon after being rushed to a Los Angeles hospital in cardiac arrest , had a long history of confirmed health problems , in addition to rumored conditions . Michael Jackson , seen here in 2005 , was taken to UCLA Medical Center in cardiac arrest Thursday . In 1984 , Jackson was burned while singing for a Pepsi-Cola commercial in Los Angeles , when a special-effects smoke bomb misfired . He had to have major surgery on his scalp and said that because of the intense pain , he developed an addiction to painkillers . He also was reported to have a form of lupus in the 1980s , but it was later said to have gone into remission . Jackson also had had numerous plastic surgeries , including rhinoplasty and a chin implant . In 1993 , Jackson 's dermatologist , Dr. Arnold Klein , released a statement saying that Jackson had a skin disease called vitiligo . The condition causes a person to lose melanin , the pigment that determines the color of skin , hair and eyes , in patches or all over the body . Vitiligo affects 1 million to 2 million people in the United States , according to the National Institutes of Health , and no one knows what causes it . Learn about the difference between heart attack and stroke . He was also hospitalized with chest pains in 1990 and postponed a concert because of dehydration in August 1993 . A concert tour was cut short in November 1993 because of an addiction to prescription painkillers amid allegations of child molestation . During a rehearsal at the Beacon Theater in New York in December 1995 , the entertainer collapsed onstage from apparent dehydration and low blood pressure and was hospitalized . While jurors deliberated in a case in which he was accused of child molestation in June 2005 , Jackson went to a hospital for treatment of what his spokeswoman said was recurring back pain . He had complained of back problems before . Rumors circulated in December that Jackson was ill and in need of a lung transplant because of Alpha-1 antitrypsin deficiency , a rare genetic condition . More rumors emerged in May that Jackson had skin cancer . But Randy Phillips , president and CEO of AEG Live , told CNN at the time , `` He 's as healthy as he can be -- no health problems whatsoever . '' Jackson apparently collapsed in his home in Los Angeles on Thursday and was taken by ambulance to UCLA Medical Center . Watch CNN 's Sanjay Gupta talk with Anderson Cooper about Jackson 's death » . Jackson family attorney Brian Oxman told CNN on Thursday that Jackson 's use of medications had gotten in the way of doing rehearsals . `` His injuries , which he had sustained performing , where he had broken a vertebra and he had broken his leg from a fall on the stage , were getting in the way . I do not know the extent of the medications that he was taking , '' he said . Cardiac arrest , distinct from heart attack , affects about 300,000 Americans every year , Dr. Clyde Yancy of the American Heart Association told CNN . Without immediate efforts to resuscitate a person , the survival rate is usually 5 percent to 15 percent , he said . If resuscitation takes longer than three to five minutes , a person could experience profound impairments , particularly neurologically , he said . Beyond five minutes , the likelihood of success falls quickly , especially in older people . Younger people can tolerate cardiac arrest somewhat better , he said .
Jackson was burned while singing for a Pepsi-Cola commercial in 1984 . His skin condition , vitiligo , causes a person to lose melanin , the pigment in skin . Jackson collapsed in 1995 from apparent dehydration and low blood pressure . More rumors emerged in May that Jackson had skin cancer , but were discredited .