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Overview
Attention-Deficit Hyperactivity Disorder (ADHD or AD/HD or ADD) is a neurobehavioral developmental disorder. It is primarily characterized by "the co-existence of attention problems and hyperactivity, with each behavior occurring infrequently alone" and symptoms starting before seven years of age. ADHD is the most commonly studied and diagnosed psychiatric disorder in children, affecting about 3% to 5% of children globally. Attention Deficit Hyperactivity Disorder, ADHD, is one of the most common mental disorders that develop in children. Children with ADHD have impaired functioning in multiple settings, including home, school, and in relationships with peers. If untreated, the disorder can have long-term adverse effects into adolescence and adulthood.
What is attention deficit hyperactivity disorder (ADHD)? Top
ADHD refers to a chronic bio behavioral disorder that initially manifests in childhood and is characterized by
Hyperactivity,
Impulsivity,
Inattention.
Not all of those affected by ADHD manifest all three behavioral categories. These symptoms can lead to difficulty in academic, emotional, and social functioning. The diagnosis is established by satisfying specific criteria and may be associated with other neurological, significant behavioral, and/or developmental/learning disabilities. While previously believed "outgrown" by adulthood, current opinion indicates that many children will continue throughout life with symptoms that may affect both occupational and social functioning. Some medical researchers note that approximately 40%-50% of ADHD-hyperactive children will have (typically non-hyperactive) symptoms persist into adulthood.
Causes of ADHD? Top
A specific cause of ADHD is not known. There are, however, a number of factors that may contribute to, or exacerbate ADHD. They include
  • Genetics,
  • Diet
  • Social and physical environments.
What are ADHD symptoms? Top
The diagnostic criteria for ADHD are outlined in the Diagnostic and Statistical Manual of Mental Health, 4th ed. (DSM-IV). All of the symptoms of inattention, hyperactivity, and impulsivity must have persisted for at least six months to a degree that is maladaptive and inconsistent with the developmental level of the child.
Inattention:
  • The child often fails to give close attention to details or makes careless mistakes in schoolwork, work, or other activities.
  • The child often has difficulty sustaining attention in tasks or play activities.
  • The child often does not seem to listen when spoken to directly.
  • The child often does not follow through on instructions and fails to finish schoolwork, chores, or duties in the workplace (not due to oppositional behavior or failure to understand instructions).
  • The child often has difficulty organizing tasks and activities.
  • The child often avoids, dislikes, or is reluctant to engage in tasks that require sustained mental effort (such as schoolwork or homework).
  • The child often loses things necessary for tasks or activities (toys, school assignments, pencils, books, or tools).
  • The child is often easily distracted by extraneous stimuli.
  • The child is often forgetful in daily activities.
  • Hyperactivity:
  • The child often fidgets with his/her hands or feet or squirms in his/her seat
  • The child often leaves his/her seat in the classroom or in other situations in which remaining seated is expected.
  • The child often runs about or climbs excessively in situations in which it is inappropriate.
  • The child often has difficulty playing or engaging in leisure activities quietly
  • The child often talks excessively.
Impulsivity:
  • The child often blurts out answers before questions have been completed.
  • The child often has difficulty awaiting his/her turn
  • The child often interrupts or intrudes on others (for example, butts into conversations or games).
Inattention symptoms are most likely to manifest about at 8 to 9 years of age and commonly are lifelong. The "delay" in onset of inattentive symptoms may reflect its more subtle nature (vs. hyperactivity) and/or variability in the maturation of cognitive development. Hyperactivity symptoms are usually obvious by 5 years of age and peak in severity between 7 to 8 years of age.
How is ADHD diagnosed? Top
DSM-IV criteria for diagnosis of ADHD requires that some hyperactive, impulsive, or inattention symptoms that cause present difficulties were present before 7 years of age and are present in two or more settings (at school [or work] or at home).
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