[Electroencephalographic alterations in children with attention deficit hyperactivity disorder]

Area of Science:

• Neuroscience
• Pediatrics
• Clinical Neurology

Context:

• Attention deficit hyperactivity disorder (ADHD) affects 3-5% of school-aged children.
• ADHD can co-occur with learning, language, behavioral, and motor disorders.
• Previous studies noted EEG alterations in ADHD, but their significance is unclear.

Purpose:

• To investigate neurophysiological abnormalities in children diagnosed with ADHD.
• To assess the utility of electroencephalography (EEG) and polysomnography in ADHD diagnosis.

Summary:

• A study of 15 children meeting DSM-IV ADHD criteria revealed EEG anomalies in two patients during waking state.
• Polysomnography identified specific alterations in four children, including continuous spike-wave during slow sleep and paroxysmal activity.
• These findings suggest neurophysiological disorders may be present in some ADHD cases.

Impact:

• Highlights the potential need for polysomnographic studies in evaluating certain ADHD patients.
• Contributes to understanding the neurobiological underpinnings of ADHD.
• Informs diagnostic approaches for ADHD, particularly when co-occurring disorders are present.