ADHD or attention deficit deficit hyperactivity disorder impacts the lives of nearly one in nine children in the U.S.

And while the disorder is often associated with kids, it can affect people of all ages.

Allie Rogan has more on the diagnosis and treatment of adult ADHD.

More than 15 million U.S. adults currently have an ADHD diagnosis,

and only about half of them receive their diagnosis before the age of 18.

Those are the findings of a recent CDC report looking at the state of ADHD among adults in the U.S.

The report also notes that most struggle with access to treatment

for the condition. Maggie Sibley is a professor of psychiatry and behavioral sciences at the

University of Washington School of Medicine. She's also a clinical psychologist at Seattle Children's

Hospital. Maggie, thank you so much for joining us. Why are so many adults who have ADHD not diagnosed

when they are children? This is a pretty interesting finding that we're seeing coming out of the CDC.

And if you look closer, it seems like there are certain people, especially women and people

who are a little bit older when ADHD might not have been as much on the public's

consciousness that are mostly responsible for this. And we see that ADHD looks different in girls.

And so we see that people who may not have been recognized when they were younger,

grow up, learn about what ADHD is, and then often start to recognize it in themselves.

You mentioned that it can be different in girls, but what about differences in the ages?

Does it manifest itself differently in adults than it does in children?

So the core symptoms of ADHD, which are difficulty paying attention, which can look like

carelessness, forgetfulness, disorganization, and difficulties in hyperactivity or impulsivity, which can look like carelessness, forgetfulness, disorganization, and difficulties in hyperactivity

or impulsivity, which can look like having trouble thinking before you act or being a really

high energy person in a way that can get you in trouble. That stays the same no matter how old you are,

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