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Clinical Definition
The number of symptoms required for an ADHD diagnosis (by age group) are as follows:
Six or more symptoms of inattention and/or hyperactivity-impulsivity for children up to age 16 years, OR
Five or more symptoms of inattention and/or hyperactivity-impulsivity for adolescents ages 17 years and older and adults.
In addition to the below criteria, the following conditions must also be met:Several inattentive or hyperactive-impulsive symptoms were present before age 12 years.Several symptoms are present in two or more settings, (such as at home, school or work; with friends or relatives; in other activities).There is clear evidence that the symptoms interfere with, or reduce the quality of, social, school, or work functioning.The symptoms are not better explained by another mental disorder (such as a mood disorder, anxiety disorder, dissociative disorder, or a personality disorder). The symptoms do not happen only during the course of schizophrenia or another psychotic disorder.
