My stepson sent me this cartoon:

He said that the dopamine made him think of me!  Although the cartoon is not about ADHD, it does illustrate a potential result of over-focus on the internet.  It also shows what happens when executive function isn't doing its job.  The patient is not following the rules of normal speech in words and in action; her self-regulation is not appropriate and the end behavior in this situation is not effective.  It may be that ADHD is a contributing factor to the trochee fixation after all! 

 

Remember that ADHD is a disruption of executive function and that executive functions consist of verbal working memory, non-verbal working memory, self regulation and generativity.  Longer term effects of these deficits result in difficulties with working toward future goals and an inability to stop behaviors that provide immediate gratification in order to attain delayed rewards.