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Daily Medical Update
Adult ADHD
Sunday, July 19, 2026
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🔬 Practice-Changing Findings
Evidence from RCTs and meta-analyses published in the
last 12 months.
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The Lancet. Psychiatry (2026) - Systematic Review / Network Meta-Analysis
Key Findings
- Adult amphetamine efficacy plateaued above approximately 50 mg/day, while adult methylphenidate efficacy increased without clear plateau in sparse higher-dose data.
- Discontinuation due to adverse events increased dose-dependently above 50 mg/day for adults receiving amphetamines or methylphenidate.
📋 Practice Implication: Use dose titration as an explicit shared decision: escalate when response is suboptimal, but reassess adverse-event risk before pushing beyond usual effective ranges.
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Psychiatry Research (2026) - Meta-Analysis / Review
Key Findings
- At least one comorbid personality disorder was present in 57% of adults with ADHD, with estimates strongly influenced by specialized outpatient samples.
- Passive-Aggressive, Avoidant, and Borderline personality disorders had the highest pooled co-occurrence rates at 25.3%, 23.1%, and 21.9%, respectively.
📋 Practice Implication: Screen for personality pathology when adult ADHD presentations include persistent interpersonal instability, avoidance, or emotional dysregulation, especially in specialty clinics.
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Psychiatry Research (2025) - Meta-Analysis
Key Findings
- DBT moderately reduced adult ADHD symptoms versus controls, with a pooled standardized mean difference of -0.51.
- Quality of life improved with DBT compared with controls, with a pooled standardized mean difference of 0.41.
📋 Practice Implication: Consider DBT skills-based treatment when emotional dysregulation, adherence barriers, or medication tolerability limit medication-centered ADHD care.
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Journal of Affective Disorders (2026) - Meta-Analysis
Key Findings
- Across 14 RCTs, CBT improved core ADHD symptoms (SMD = -0.45), depressive mood (SMD = -0.23), anxiety/stress (SMD = -0.24), and executive function (SMD = -0.43).
- CBT did not significantly improve quality of life (SMD = 0.12) or self-evaluation (SMD = -0.30), although CBT plus medication improved quality of life and anxiety/stress.
📋 Practice Implication: Frame CBT as a targeted intervention for symptoms, mood, anxiety, and executive skills, while separately addressing self-evaluation and broader life satisfaction.
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Behaviour Research and Therapy (2026) - Meta-Analysis
Key Findings
- CBT produced moderate improvements in global functioning after treatment (SMD = 0.47), increasing at follow-up (SMD = 0.67).
- Occupational functioning improved most strongly, social functioning improved moderately, and academic benefits were limited; ADHD symptom improvement predicted quality of life but not functioning.
📋 Practice Implication: When functional impairment is the main treatment goal, target CBT exercises toward concrete work and social routines rather than relying on symptom reduction alone.
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Summary
Recent adult ADHD evidence supports individualized dose optimization for pharmacotherapy while expanding practical nonpharmacologic options. High-significance findings emphasize CBT and DBT for symptom, functional, and quality-of-life outcomes, alongside high rates of personality disorder comorbidity that should shape assessment and treatment planning.
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