Anna Marie "Patty" Duke (December 14, 1946 – March 29, 2016) was an American actress of stage, film, and television. She first became known as a teen star, who won an Academy Award for Best Supporting Actress at age 16 for her role as Helen Keller in The Miracle Worker (1962), which she had originated on Broadway. Later she had the lead in the eponymous sitcom The Patty Duke Show. Duke progressed to more mature roles such as in the film Valley of the Dolls (1967), playing Neely O'Hara. She served as the president of the Screen Actors Guild from 1985 to 1988, four years after her Patty Duke Show co-star William Schallert held the same office.
Duke was diagnosed with bipolar disorder in 1982, after which she devoted much of her time as an advocate for and educating the public on mental health issues.
In 1996, 30 years after The Patty Duke Show ended, Duke was ranked No. 40 on TV Guide's "50 Greatest TV Stars of All Time".
Patty Duke cause of deagth
Duke died on the morning of March 29, 2016, at the age of 69, in Coeur d'Alene, Idaho, of sepsis from a ruptured intestine.
BIOGRAPHY: PATTY DUKE Pt. 1/5 2003