What Are the Symptoms of ADHD?

There are three core symptoms of ADHD:

  1. Inattention
  2. Hyperactivity
  3. Impulsivity
Inattentive Symptoms
Difficulty paying attention to details/makes careless mistakes
Has difficulty sustaining attention
Often unable to follow through on tasks
Trouble with organization
Avoids tasks requiring sustained mental effort
Often loses things
Easily distracted
Forgetful in daily activities
Hyperactive/Impulsive Symptoms
Has trouble staying seated
Excessive running/climbing or restlessness
Trouble with quiet activities
Needs to be "on the go"
Often talks too much
Blurts out answers
Difficulty awaiting turn
Interrupts conversations or intrudes on others

ADHD symptoms may impact teens and adults differently than they do children.

People of different ages can show the same symptoms in different ways. The following checklists can be used as a starting point to help you recognize the symptoms of ADHD, but are not meant to replace talking with a trained health care professional. An accurate diagnosis can be made only with a thorough clinical evaluation. It is important to share the information in the checklist with your doctor.

Learn more about what ADHD symptoms can look like at different ages