Arnold Klein

Arnold William Klein was an American dermatologist. During the early years of the AIDS epidemic, Klein was among the first physicians in Southern California to diagnose Kaposi's sarcoma in a young patient. In the 1980s, he helped pioneer the cosmetic use of Botox to reduce facial wrinkles and was later described within the medical community as having "fathered the Botox generation." Klein also served on the boards of several charitable organizations and was closely associated with singer Michael Jackson, whom he treated for more than two decades.