Key Takeaways
Extended Takeaways
- This was a markedly impaired and comorbid adult ADHD sample: only 8% had no psychiatric comorbidity, while 53% had 4 or more psychiatric comorbidities, underscoring the need for broad diagnostic assessment when adults present with attention problems.
- Current ADHD symptoms were associated with substantial ongoing burden, with 22% reporting severe impairment and 50% reporting moderate impairment in the past month; functional severity should be assessed directly rather than inferred from symptom counts alone.
- Although men and women did not differ in total inattentive or hyperactive/impulsive symptom counts, their comorbidity patterns diverged: men had higher lifetime rates of conduct disorder and alcohol abuse, whereas women had higher rates of dysthymia, panic disorder, agoraphobia, simple phobia, and generalized anxiety disorder.
- Age did not meaningfully change adult ADHD symptom presentation in this cohort: when split at the median age of 38 years, there were no differences in the total number or type of endorsed inattentive and hyperactive/impulsive symptoms.
- The predominance of inattentive presentations was broad rather than limited to a single subtype, as 93% of adults with ADHD had either the predominately inattentive or combined subtypes; clinicians should ask specifically about distractibility, sustained attention, and sustained mental effort in adult evaluations.
