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Welcome to the UC Davis MIND Institute and Center for Excellence in Developmental Disabilities (CEDD) resource page for Attention Deficit/Hyperactivity Disorder (ADHD). 


What is ADHD?

ADHD is the most common childhood psychiatric disorder, affecting behavior and daily functioning in 3 to 5 percent of school-aged children in the United States.

  • Symptoms - Children may act quickly without thinking and interrupt others (impulsivity), fidget, have difficulty sitting still and staying on-task hyperactivity), or daydream and get easily sidetracked (inattention). 
  • Three types - ADHD is diagnosed as the hyperactive impulsive type (no significant inattention), inattentive type (no significant hyperactive impulsive behavior) or the combined type (both inattentive and hyperactive-impulsive symptoms).
  • Other disorders - Children with ADHD can suffer from other psychological disorders,including depression, learning disorders, impulse control disorders and autism spectrum disorders. Adults may suffer from substance abuse.
  • Life-long management - ADHD is a chronic illness requiring long-term treatment strategies.



The websites listed are independent of the UC Davis MIND Institute and Center for Excellence in Developmental Disabilities (CEDD).  Resources are provided for information only and do not reflect the opinions or endorsement of the UC Davis MIND Institute and Center for Excellence in Developmental Disabilities.

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