И в заключение:
In summary, the cardinal ADHD symptoms of inattention, hyperactivity, and impulsivity are not unique to ADHD. In addition, there is a remarkable overlap of these ADHD symptoms with those of comorbid mental health conditions or learning problems. A consistent genetic marker has not been found, and neuroimaging studies have been unable to identify a distinctive etiology for ADHD. The lack of evidence of a unique genetic, biological, or neurological pathology hinders the general acceptance of ADHD as a neurobehavioral disease entity. In addition, the ratings of school children with ADHD by parents and teachers are frequently discrepant and do not appear to provide an objective diagnostic basis. The issue of the clinical entity of ADHD remains therefore an open question and requires further investigation.
А вот типично ватнический подход. Врач всего и заработал бесплатный ужин!