ADHD is a brain disorder that affects many individuals. It occurs when the two hemispheres of the brain work at different speeds, sometimes known as a functional disconnect. Although we aren’t sure what causes ADHD, we do know it occurs more often in boys. Symptoms include hyperactivity and the inability to pay attention.

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ADHD occurs in children, teenagers, and adults, but it is more common in boys than in girls. Even though the exact causes of ADHD remain unknown, they likely involve hereditary and environmental factors. Click on this infographic to learn more about the symptoms of ADHD.