ADHD in Older adults / Seniors: Prevalence, Risk & Key Differences

Key things to know What the evidence shows
How common is it? 2.18% research-defined; 0.23% clinically diagnosed
Is it more common among older adults / seniors? Declines with age, but persists into later life
Are older adults / seniors at higher risk? ADHD persists into older adulthood
How much higher is the risk? Research diagnosis 2.18% vs clinical diagnosis 0.23%
How often can it be missed? Very high
Does it show up differently among older adults / seniors? Yes
How might it look different? Forgetfulness, disorganisation, time-management and executive problems may resemble ageing or cognitive decline
What commonly occurs alongside it? Depression; anxiety; sleep disorders; chronic illness
What can it be confused with? Mild cognitive impairment/dementia; depression; sleep disorder; medication/medical causes
Common screening tool ASRS / structured adult assessment
Separate screening tool for older adults / seniors None established specifically for seniors
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