How is ADHD diagnosed?

Healthcare providers use the guidelines in the American Psychiatric Association’s Diagnostic and Statistical Manual, Fifth edition (DSM-5)¹, to help diagnose ADHD. This diagnostic standard helps ensure that people are appropriately diagnosed and treated for ADHD. Using the same standard across communities can also help determine how many children have ADHD, and how public health is impacted by this condition.

ADHD predominantly inattentive presentation

• Fails to give close attention to details or makes careless mistakes
• Has difficulty sustaining attention
• Does not appear to listen
• Struggles to follow through with instructions
• Has difficulty with organization
• Avoids or dislikes tasks requiring sustained mental effort
• Loses things
• Is easily distracted
• Is forgetful in daily activities

ADHD predominantly hyperactive-impulsive presentation

• Fidgets with hands or feet or squirms in chair
• Has difficulty remaining seated
• Runs about or climbs excessively in children; extreme restlessness in adults
• Difficulty engaging in activities quietly
• Acts as if driven by a motor; adults will often feel inside as if they are driven by a motor
• Talks excessively
• Blurts out answers before questions have been completed
• Difficulty waiting or taking turns
• Interrupts or intrudes upon others