Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

ADD & ADHD Health Center

Font Size

Immaturity Mistaken for ADHD?

Youngest Kids in Class More Likely to Get ADHD Diagnosis; Some Researchers Fear Misdiagnosis

Is It Really ADHD? Another Look

In a similar study, Melinda Morrill, PhD, a research assistant professor of economics at North Carolina State University in Raleigh, and her colleagues looked at data from two national health surveys and a national private health insurance claims database to evaluate ADHD diagnosis and treatment in children. The time period studied was from 1996 to 2006.

"The basic idea is, we compared children born just a few days apart," she tells WebMD, including older kids who made the kindergarten cutoff and younger kids who did not. "We found very different rates of diagnosis and treatment."

''Children born before the cutoff have a 25% higher rate of ADHD diagnosis than children born after the cutoff for kindergarten eligibility," she says. "That's huge."

In her national sample, she says, the average diagnosis rate of ADHD is 8%. Children born before the cutoff had a rate of 9.7%, she says, and children born after (the older kids in a class) had a rate of 7.6%.

She can't say why, as that's beyond the study's scope. "All we show is that we have this pattern," she says.

She agrees with Elder: ''Immaturity could be mistaken for ADHD."

Is It Really ADHD? Second Opinions

James Perrin, MD, a spokesman for the American Academy of Pediatrics and head of the division of general pediatrics at Massachusetts General Hospital for Children, Boston, is skeptical that a million children may be misdiagnosed.

''It's not an easy diagnosis to make," he says of ADHD. "There is subjectivity."

Parents should get two opinions, he says. "We do recommend there be an independent verification," says Perrin, who has consulted for pharmaceutical companies that make medications for ADHD.

If the diagnosis is ADHD, environmental changes as well as medication are recommended, Perrin says, not medication alone. "It may be the child is in the wrong environment."

Another expert, George Kapalka, PhD, of Monmouth University in Long Branch, N.J., who has researched ADHD, doesn't dispute there are misdiagnoses. "We should strive to diminish those," he tells WebMD.

But, he adds, criteria for diagnosing ADHD ''clearly indicate impairment must be present in at least two settings, so the diagnosis should never be made based on school problems alone."

Today on WebMD

Post it notes
Symptoms and treatments.
Close up of eye
What's zapping your focus?
man driving car
How to manage your impulses.
contemplating woman
Learn to stop procrastinating.
concentration killers
Woman taking a vitamin or supplement
ADHD and Substance Abuse
Reduce Side Effects ADHD Medications

boy eating egg
smiling man
ADHD in Marriage and Romantic Relationships
Adult man lying awake in bed