A Dr. John Preston, PsyD, Psychology, answered. The average age of onset for bipolar disorder is 23, although late-adolescent onset is fairly common. Bipolar disorder can occur as early as 6 years old or as late as 50. Dr. John Preston, PsyD, Psychology, answered. The average age of onset for bipolar disorder is 23, although late-adolescent onset is fairly common. Bipolar disorder can occur as early as 6 years old or as late as 50.
John Richard Schneider III. John Richard Schneider III (born April 8, 1960) is an American actor and singer. He is best known for his portrayal of Bo Duke in the 1980s American television series The Dukes of Hazzard, and as Jonathan Kent on Smallville, a 2001 television adaptation of Superman.
âThe Dukes of Hazzardâ originally aired on CBS from 1979-85 and followed the adventures of cousins Bo Derek (John Schneider) and Luke Derek (Tom Wopat) who raced around town in their trusty stock car.