ADHD (Attention Deficit Hyperactivity Disorder)

ADHD (Attention Deficit Hyperactivity Disorder) Symptoms & Signs

Medical Author:

While inattention and hyperactivity are the cardinal symptoms of ADHD, a number of other symptoms are contained within the diagnostic criteria for this condition and are typical for those with ADHD.

Symptoms related to inattention include

  • trouble paying attention in school or work,
  • the appearance of not listening,
  • failing to complete assigned tasks,
  • avoidance of activities that require sustained focus,
  • losing things, and
  • being easily distracted.

Symptoms related to hyperactivity include

  • restlessness,
  • fidgeting,
  • interrupting,
  • frequent talking,
  • intrusiveness,
  • trouble paying attention, and
  • trying to do multiple things at once.

Children and adults with ADHD may also have symptoms like

  • insomnia,
  • low tolerance for frustration,
  • poor self-image,
  • forgetfulness,
  • disorganization,
  • mood swings, and
  • "hyperfocus," a tendency to intensely focus on one task or event that precludes focus on other necessary tasks.

Medically Reviewed by a Doctor on 2/21/2017

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Soreff, Stephen. "Attention Deficit Hyperactivity Disorder." Jan. 31, 2017. <>.

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ADHD (Attention Deficit Hyperactivity Disorder) Symptoms and Signs
  • Avoidance of Activities Involving Sustained Focus
  • Decreased Awareness of Consequences
  • Decreased Motivation
  • Disorganization
  • Fidgeting
  • Forgetfulness
  • Frequent Talking
  • Hyperactivity
  • Hyperfocus
  • Impulsivity
  • Inattention
  • Insomnia
  • Interrupting
  • Intrusiveness
  • Mood Swings
  • Poor Self-Image
  • Procrastination
  • Restlessness
  • Trouble Completing Assigned Tasks
  • Trouble Concentrating
  • Trouble Prioritizing
  • Trouble Waiting One's Turn
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