Virtual Mentor. June 2007, Volume 9, Number 6: 433-436.
Attention Deficit Hyperactivity Disorder in Childhood; Overview, Diagnosis and Treatment
Diagnosis and treatment of attention deficit hyperactivity disorder, a childhood-onset problem of hyperactivity, inattention and impulsiveness that may persist into teen years and even beyond, affecting girls as well as boys.
Attention deficit hyperactivity disorder (ADHD) is the most common neurobehavioral disorder of childhood and among the most prevalent chronic health conditions affecting school-age children. ADHD is characterized by some combination of hyperactivity, impulsivity and inattention. Children with ADHD may experience functional difficulties in every aspect of their lives, including behavior, academic achievement, and interpersonal relationships with family and peers . In the long term, the combination of frustration, rejection and failure can have a serious detrimental effect on developing self-esteem .
With the establishment of more comprehensive diagnostic criteria that identify the various subtypes, estimates now place the childhood prevalence of ADHD at 4 to 8 percent . Once thought to affect boys more than girls, the disorder now appears not to discriminate along gender lines. While, indeed, more boys than girls are diagnosed with ADHD, girls are being identified more often now than in the past, particularly in the inattention subtype. Possibly girls are less likely to be recognized and diagnosed with ADHD because their behavior is generally less overactive and disruptive. ADHD was originally thought to be a condition that resolved in adolescence, but new evidence suggests that this is not the case for the majority of children. For up to 65 percent of patients diagnosed in childhood, the symptoms persist into the teenage years and, for some, into adulthood .
The American Academy of Pediatrics (AAP) has developed diagnostic guidelines based on the Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV) criteria . They urge that all children between the ages of 6 and 12 who present with symptoms of inattention, hyperactivity, impulsivity, academic underachievement or behavior problems be evaluated for ADHD. The criteria for establishing an ADHD diagnosis are as follows:
Along with the DSM-IV criteria, the symptoms must have been present before the age of seven, be found in two or more settings, and result in significant impairment in social, academic or occupational functioning. The symptoms must not occur exclusively during the course of a developmental disorder or be better accounted for by another mental disorder.
The AAP also requires that parents, caregivers and teachers provide direct evidence regarding the core symptoms of ADHD in various settings, the age of onset, duration of symptoms and degree of impairment. Evaluation of the child with ADHD should always include assessment for co-existing conditions . Two-thirds of children with ADHD have at least one other psychiatric disorder, the most common of which are depression, anxiety disorders, conduct disorders, oppositional-defiant disorders and learning disabilities .
ADHD is currently considered to be a persistent and chronic syndrome for which no cure exists. Treatment should begin early to avert as much of the academic struggle, family conflict and social ostracism as possible and to avoid the long-term development of anxiety, depression and diminished self-esteem . A multimodality approach to treatment that emphasizes both behavioral interventions and pharmacotherapy is considered optimal. Combined therapy is found to be especially useful for children with comorbid anxiety, depression or stressed family situations. It may also reduce the medication doses needed for symptomatic control .
Behavioral therapy—most of which relies on a system of positive and negative reinforcements—consists of interventions designed to alter a child's behavior at home and school. With time and consistent, repeated application, these interventions are thought to gradually reshape a child's behavior.
Pharmacotherapy consists of short-term and long-term stimulants. The active ingredients in the majority of both these formulations are methylphenidate (Concerta, Ritalin) and dextroamphetamine (Dexedrine). It is believed that stimulants work to minimize ADHD symptoms by altering the levels of neurotransmitters in the brain. Eight out of 10 children show improvement on stimulants. For children with inattention alone, low doses are generally sufficient. Higher doses may be required for a diagnosis of combined attention deficit and hyperactivity .
ADHD is a chronic disorder that affects a substantial number of American children. Untreated, the symptoms of ADHD can make the developmental tasks of childhood nearly impossible and place children at increased risk for depression, school failure and substance abuse as they grow older. The guidelines for establishing a diagnosis of ADHD encourage the use of DSM-IV criteria, rely on information obtained about symptoms from a variety of settings and sources, and highlight the need to evaluate for co-existing conditions. Safe and effective treatment that utilizes both behavioral modifications and stimulant medications is available and can dramatically alter the negative course of ADHD.
Sarah Maitre is a fellow in the Institute for Ethics at the American Medical Association in Chicago. She will receive her medical degree from Oregon Health & Sciences University in June 2007.
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