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zoom RSS 増加する10代のADHD/注意欠陥多動性障害

<<   作成日時 : 2008/07/26 01:11   >>

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増加する年長児のADHD
画像 12才未満の子どもの発症率は変わっていないが、年長の子どものADHD注意欠陥多動性障害が増加していると政府の報告があった。従来はほとんどが11才までに診断されてきたので専門家は驚いている。年長の子どもで診断される例が毎年4%増加している。ADHD治療を10代や成人にも広げようという傾向と共に医師が年長の子どものADHDの可能性を考慮しつつあることを反映している。
画像 診断基準に合わない人にリタリンその他の薬剤が使用されている可能性がある。
 ADHDは通常は7才までに発症する衝動や多動と集中力の欠如を特徴とする行動・学習障害である。学校で問題化し、ほとんどは11才までに診断される。CDCは米国では440万人以上の子どもが専門家により診断されていると概算している。
 1997-2006年に調査が行われ、6-17才の約5000万人のうち、約400万人が診断と推計。6-11才では7%程度であるが、12-17才については7%以下だったのが約10%に増加した。ADHD薬剤の使用が増大し、15才以下のメチルフェニデート(リタリン)使用は1993年の190万から2005年に320万に増大した。アデラルAdderall XR や ストラテラStrattera といった新たなADHD薬剤の成人と年長の子どもへの使用が増大している製薬企業が販売戦略を持って動かしていると考える人もいる
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CDC: ADHD Increasing in Older Kids
Wednesday, Jul. 23, 2008 By AP / MIKE STOBBE
http://www.time.com/time/health/article/0,8599,1826068,00.html

(ATLANTA) ― More older children are being diagnosed with attention deficit hyperactivity disorder while the rate is holding steady for children under 12, according to a government report released Wednesday.

Some experts called the finding surprising, noting that most childhood diagnoses traditionally occur by age 11.

The study didn't investigate why the increase in one age group was so much higher than the other. It found the%age of older children diagnosed with ADHD has been rising by 4% each year.

Some experts say the increase may reflect that doctors are increasingly considering the possibility of ADHD in older kids who have concentration problems ― a trend that coincides with the marketing of ADHD medications to teens and adults.

The finding may also reflect the misuse of Ritalin and other ADHD medications in that age group as study aides and recreational stimulants, some experts speculated.

"There are people out there being treated for ADHD that probably don't meet the diagnostic criteria," said Scott Kollins, director of Duke University Medical Center's ADHD Program.

Attention deficit hyperactivity disorder ― characterized by impulsiveness, hyperactivity and inability to focus attention ― is a behavioral and learning problem that usually appears in children by age 7.

The problem often is identified in school, and most children are diagnosed by age 11. The Centers for Disease Control and Prevention estimates that more than 4.4 million U.S. children have been diagnosed with ADHD by medical professionals.

The new study draws its results from an annual survey of 35,000 to 40,000 U.S. households, in which government researchers go door-to-door to conduct interviews. In households with children, parents are asked if a doctor or health professional had ever told them that their child had ADHD or attention deficit disorder (ADD).

The study's findings cover 1997 through 2006.

In each of those years, nearly 50 million children fell into the 6-to-17 age range, the study estimates. Roughly 4 million of them were given an ADHD or ADD diagnosis, the study estimates.

For children ages 6 through 11, the proportion hovered around 7% during those years. But for children 12 through 17, it rose from just under 7% to nearly 10%. That increase wasn't seen in previous government estimates, said Patricia Pastor, a CDC health statistician and the study's lead author.

It may reflect a growing understanding that a child ― especially an older kid ― can have ADHD without being disruptively impulsive or hyperactive, said Jeff Epstein, director of the ADHD center at Cincinnati Children's Hospital Medical Center.

Another factor may be that ADHD is sometimes diagnosed when adolescents are being checked for other conditions, such as depression, said Dr. Mohammad Ghaziuddin, director of the University of Michigan's ADHD and autism program.

Meanwhile, the use of ADHD medications has been increasing. According to the CDC, doctor's visits for children under 15 where methylphenidate ― also known as Ritalin ― was prescribed or given went from 1.9 million in 1993 to 3.2 million in 2005.

The marketing of newer ADHD drugs like Aderall XR and Strattera to adults and older kids is pushing up use, experts said.

"I think the industry does drive a lot of it," said Kollins of Duke, referring to pharmaceutical marketing.

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増加する10代のADHD/注意欠陥多動性障害 医師の一分/BIGLOBEウェブリブログ
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