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.
No more royalty checks! John Schneider, who played Bo Duke on the show Dukes of Hazzard, was not happy when TV Land decided to drop the 80s series from its lineup on Wednesday. Pictured above in April. The actor who played Bo Duke on the Dukes of Hazzard is not happy to see the beloved 80s TV show taken off the air.