Attention-deficit/hyperactivity disorder (ADHD)
may persist into adulthood in a substantial proportion of
affected youth, with rates differing between 15 (persistence
of full syndrome) and 65% (partial remission)
(Faraone et al. 2005).
There is ample evidence that patients suffering from
ADHD carry a heightened risk for other psychiatric
disorders. Adults with ADHD show high rates of comorbidity
with affective and anxiety disorders, antisocial
personality disorder and substance abuse disorders
(Barkley & Brown 2008, Kessler et al. 2006). Though
these reports lack data on psychosis, this comorbidity
was in fact reported independent of psychotic symptoms
induced by treatment with stimulants. In children and
youth with ADHD, comorbidity with psychosis was
found in 5% (Stahlberg et al. 2004) and a retrospective
study in adult patients with psychosis revealed a history
of ADHD in childhood in 17% (Peralta et al. 2010).