Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/3/2025

Treatment of Severe Anxiety, Panic Attacks, and ADHD

Rationale for Adding a Stimulant

  • The American Academy of Child and Adolescent Psychiatry recommends stimulants as the first-line treatment for ADHD, even in patients with comorbid anxiety disorders 1, 2
  • Clinical trials have shown that patients with ADHD and comorbid anxiety have a robust response to stimulants, contrary to earlier concerns 1, 2
  • The onset of stimulant treatment is rapid, allowing quick assessment of whether ADHD symptoms improve 1
  • Reducing ADHD symptoms through stimulant treatment can have a substantial positive impact on anxiety symptoms 1

Treatment Algorithm

  • The American Academy of Child and Adolescent Psychiatry suggests adding a stimulant medication to bupropion 150mg for patients with severe anxiety, panic attacks, and ADHD who have shown improvement on bupropion but could not tolerate a higher dose 1
  • Begin with a short-acting formulation to assess tolerability, then consider switching to extended-release 3
  • Options include methylphenidate (5-20mg three times daily) or dextroamphetamine (5mg three times daily to 20mg twice daily) 2, 4

Special Considerations

  • Start with a low dose of the stimulant and titrate gradually to minimize side effects 3
  • For methylphenidate, multiple daily doses may be required due to its 3-5 hour duration of action 3
  • Regular assessment of blood pressure, pulse, and weight is necessary when using stimulants 6

Alternative Approaches if Stimulants Fail

  • Alpha-2 adrenergic agonists (guanfacine, clonidine) are effective for ADHD with comorbid anxiety and sleep disorders 6
  • Atomoxetine provides "around-the-clock" effects for ADHD symptoms and may take 6-12 weeks until effects are observed 6

Monitoring and Follow-up

  • Assess improvement in both ADHD and anxiety symptoms regularly 1
  • Monitor for side effects of both medications 5
  • If anxiety symptoms remain severe despite optimized ADHD treatment, consider adding an SSRI as recommended in anxiety disorder treatment guidelines 7