Why Do Other Disorders So Often Coexist with ADHD?

00:00 Introduction, Dad Joke and Humorous Bumper Sticker
00:57 Introduction to the question posed in the title – why comorbidity in ADHD?
01:37 Diagram showing disorders most likely to be seen with ADHD
02:53 Diagram from a large study on the shared genetic relationship among mental disorders
07:35 The possible role of shared environmental experiences in further explaining comorbidity
10:00 Summation

This short video discusses several reasons why many other disorders are so often seen as coexisting with ADHD. Over 80% or more of clinic referred children and adults seem to have a second disorder and over 50% may have a third disorder. Why does having ADHD predispose one to a high likelihood of having a second or even third disorder? It's complicated but this video tries to explain the role of shared genetics, shared environments, and the possibility that one disorder (ADHD) predisposes one to experiences that may then lead to developing the second disorder.