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.
Actor | Soundtrack | Director. He'll forever be remembered as strapping, good ol' boy Luke Duke, the virile, blue-eyed, dark-haired, plaid-shirted rascal (equally good-looking John Schneider was the strapping, plaid-shirted blond cousin) on the rough-and-tumble bucolic 80s series The Dukes of Hazzard (1979).