Diagnosis

The American Academy of Pediatrics issued its first guidelines for diagnosing attention-deficit hyperactivity disorder (ADHD) in children in 2002. They include the following:

• Children between ages 6 and 12 should first be evaluated for ADHD if they show symptoms of inattention, hyperactivity, impulsivity, academic underachievement, or behavior problems in at least two settings. Such behaviors should have been harmful for the child academically or socially for at least 6 months.
• The child should meet the official symptom guidelines.
• A diagnosis requires detailed reports by parents or caregivers. It should be noted that a mother's description of her child's behavior is a very accurate and reliable guide for diagnosing ADHD. Parents should not be shy about insisting on further evaluation if their experience does not match a doctor's single observation of their child.
• Guidelines for primary care doctors emphasize the importance of obtaining direct evidence from the classroom teacher or other school-based professionals about the child's symptoms and their duration, and evidence of functional impairment in the school setting.
• The child should be assessed for accompanying conditions (such as learning difficulties).

Difficulties in Identifying Children with ADHD

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There are currently no laboratory or imaging tests to reliably diagnose ADHD. A diagnosis relies only on behavioral symptoms and ruling out other disorders. Many experts believe that the disorder is both over- and underdiagnosed. Diagnosis of attention-deficit hyperactivity disorder is difficult for some of the following reasons: