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Journal of Pediatric Psychology Advance Access originally published online on June 7, 2007
Journal of Pediatric Psychology 2007 32(6):631-642; doi:10.1093/jpepsy/jsm005
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Copyright © 2007 by the Ambulatory Pediatric Association, published by Elsevier Inc.

Attention-Deficit/Hyperactivity Disorder: Diagnosis, Lifespan, Comorbidities, and Neurobiology

Thomas J. Spencer, MD, Joseph Biederman, MD and Eric Mick, ScD

Department of Psychiatry, Massachusetts General Hospital, Boston, Mass.

All correspondence concerning this article should be addressed to Thomas Spencer, MD, Yawkey Center for Outpatient Care, 32 Fruit St, Boston, MA 02114. tspencer{at}partners.org.


  Abstract

In this report, we provide an evidence-based overview of attention-deficit/hyperactivity disorder (ADHD), including diagnosis, prevalence, developmental expression of symptoms, persistence, the heterogeneity of functional outcome, impairment in afflicted adults, psychiatric comorbidity, pathophysiology, genetics, psychosocial and biologic risk factors, and neurobiology. Attention-deficit/hyperactivity disorder is an early-onset, highly prevalent neurobehavioral disorder, with genetic, environmental, and biologic etiologies, that persists into adolescence and adulthood in a sizable majority of afflicted children of both sexes. It is characterized by behavioral symptoms of inattention, hyperactivity, and impulsivity across the life cycle and is associated with considerable morbidity and disability. Comorbidity is a distinct clinical feature of both childhood and adult ADHD. Although its etiology remains unclear, emerging evidence documents its strong neurobiologic and genetic underpinnings. Despite the high diagnostic reliability and the robust evidence of the validity of ADHD, there are many underlying issues that remain to be resolved. These include establishing developmentally appropriate diagnostic criteria at older ages, further elaborating the impact of gender on symptom expression, and examining risk and protective factors in relationship to prevention or amelioration of ADHD as well as related functional impairments.

Key words: attention-deficit/hyperactivity disorder; comorbidity; diagnosis; neurobiology..

ADHD Special Issue, reprinted by permission from Ambulatory Pediatrics, Vol. 7, Number 2 (Supplement), Jan./Feb. 2007,

Received January 7, 2006; accepted July 22, 2006


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[Abstract] [Full Text] [PDF]


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