Intro ~ ADHD is one of the most common psychiatric disorders, with a worldwide prevalence of 5.2 % among children and adolescents, persisting into adulthood in 60–70 % of cases either as a residual or as a full clinical disorder ~ Medications used to treat ADHD such as methylphenidate, amphetamine, and atomoxetine indicate a dopamine/norepinephrine dysfunction as the neurochemical basis of ADHD and a potential target for anxiety and depression ~ The presence of probable ADHD and the severity of ADHD symptoms are related with the severity of insomnia, even after controlling the depression, anxiety