Children who take medication to treat attention deficit hyperactivity disorder (ADHD) don't appear to be at increased stroke risk, according to a study presented at the American Stroke Association's International Stroke Conference 2014.

In a study of 2.5 million 2- to 19-year-olds over a 14-year period, researchers compared stimulant medication usage in children diagnosed with ischemic or hemorrhagic stroke to stimulant usage in children without stroke.

Researchers found no association between stroke risk and the use of ADHD stimulant medications at the time of stroke or at any time prior to stroke.