Dr. Arnold Klein, a dermatologist who treated Michael Jackson until his death, has admitted to prescribing the narcotic painkiller Demerol for Jackson.

In an interview that aired on CNN’s Larry King Show last night, Klein brought up Jackson’s old burn injury sustained during a Pepsi commercial shoot in the early 90’s, as an excuse for continuing to prescribe the narcotic to Jackson.

As for fathering Jackson’s two older children, Klein admitted to donating sperm — once — to a sperm bank, but not specifically for Jackson’s use.

Klein’s flip flop admission comes one day after he denied overprescribing narcotic painkillers to Jackson. He also denied being one of the doctors currently under investigation. But acording to TMZ.com, the Jackson family gave L.A. police a list of doctors who overprescribed meds to Jackson — and Klein’s name was on it.

Kelin, who is responsible for Jackson’s ghastly white appearance, said he treated Jackson for Lupus, an inflammatory response to the body’s immune system attacking the body’s cells.

Klein recalls meeting Jackson for the first time when a friend brought him to his office. Klein described a red “butterfly rash” on Jackson’s face — a classic sign of Lupus, and his “severe acne” at the time. Klein does not mention the vitiligo skin disease that Jackson frequently hid behind — and that his fans continue to repeat despite there being no evidence to that fact.

Klein also remarked on the fact that Jackson thought his face was “a work of art.”