Diagnostic Criteria for Adult ADHD

Introduction to ADHD Assessment

The American Academy of Child and Adolescent Psychiatry recommends using the DIVA (Diagnostic Interview for ADHD in adults) as a structured diagnostic tool to assess ADHD symptoms across the lifespan, with particular emphasis on establishing childhood onset and current adult manifestations 1, 2, 3
The DIVA requires documentation that core ADHD symptoms (inattention, hyperactivity, impulsivity) were present before age 7 years, as this childhood onset is essential for diagnosis 1, 2, 3

Adults with ADHD often have poor insight and underestimate the severity of their ADHD symptoms and resulting impairments, making collateral information from a spouse, parent, or friend essential 1, 2, 3
A complete psychiatric evaluation is required to rule out conditions that may masquerade as ADHD, including bipolar disorder, depression, Axis II personality disorders, learning disabilities, narcolepsy, and undiagnosed borderline intellectual functioning 1, 2, 3

Because of the high rate of comorbid substance abuse, a detailed history of drug and alcohol use must be undertaken, with consideration of obtaining a urine drug screen 1, 2, 3
The American Academy of Child and Adolescent Psychiatry suggests that symptoms must cause clinically significant impairment in social, academic, or occupational functioning 1, 2

The Wender Parent's Rating Scale and Wender Utah Rating Scales are useful for retrospective childhood symptoms 1, 2, 3
The Brown Attention-Deficit Disorder Scale for Adults is useful for current symptom assessment 1, 2, 3
The Conners Adult ADHD Rating Scale is useful for comprehensive evaluation 1, 2, 3

The American Academy of Child and Adolescent Psychiatry recommends that the diagnosis must be based upon a complete history and evaluation of the patient, using a structured framework like the DIVA to ensure comprehensive assessment across all required diagnostic domains 1, 2, 3
Do not rely solely on patient self-report, as adults with ADHD are unreliable reporters of their own behaviors—always obtain collateral information from family members or close contacts 1, 2, 3
Do not diagnose ADHD based solely on current symptoms without establishing childhood onset, as this is a core diagnostic criterion 1
Do not overlook comorbid conditions, particularly mood disorders, anxiety disorders, and substance use disorders, which frequently co-occur with ADHD and require separate assessment and treatment 1, 2, 3

The American College of Obstetricians and Gynecologists recommends using the Adult ADHD Self-Report Scale (ASRS-V1.1) Part A as the best initial screening tool for adult ADHD, with a positive screen defined as checking "often" or "very often" for 4 or more of the 6 questions, which efficiently identifies adults who require further diagnostic evaluation 4
A positive screen on the ASRS-V1.1 Part A, defined as endorsing 4 or more items as "often" or "very often", warrants proceeding to comprehensive diagnostic assessment, as it aligns with DSM-5 criteria 4
The ASRS was developed and validated specifically for adult populations, providing a reliable initial screening instrument 4

The American Academy of Pediatrics suggests administering Part B of the ASRS to fully elucidate the symptom profile beyond the initial screening questions, providing a more detailed assessment of both inattentive and hyperactive-impulsive symptoms 4
The ASRS Part B is used to assess the symptom profile in adults with a positive screen on Part A, which is essential for a comprehensive diagnostic assessment 4
The American College of Obstetricians and Gynecologists recommends using the Weiss Functional Impairment Rating Scale-Self (WFIRS-S) to measure ADHD-specific functional impairment in domains such as home management, appointment tracking, and organizational tasks, which is essential for assessing the impact of ADHD on daily life 4

The American Academy of Pediatrics states that neuropsychological testing should not be used as a primary diagnostic tool for ADHD, as it has not been shown to improve diagnostic accuracy, though it may clarify learning strengths and weaknesses 5, 6