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Attention deficit hyperactivity disorder (ADHD) is a common childhood disorder, affecting more than 4 million kids. Learn more about ADHD by taking this quiz, based on information from the National Institute of Mental Health (NIMH).

A child with ADHD may be hyperactive, inattentive, or both.


All children are hyperactive or inattentive at times. For a child to be diagnosed with ADHD, he or she must have one or both of these symptoms for at least six months.


ADHD often runs in families.


A child whose diet includes lots of refined sugar has a threefold chance of developing ADHD than a child who eats only a little sugar.


Children with ADHD may have other mental health issues.


The most common type of medication used to treat ADHD is a stimulant.


A child who must take medication for ADHD is more likely to become addicted to drugs.


Parenting skills training can help a parent better help a child with ADHD.