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Understanding ADHD: Causes, Symptoms, and Treatment Options at North Shore ADHD Clinic

The North Shore ADHD Clinic, led by Dr. Anthony M. Ocana, specializes in diagnosing and treating ADHD as a brain-based disorder linked to dopamine circuit dysfunction. Affecting 8-10% of children and 4-5% of adults, ADHD manifests through hallmark symptoms such as distractibility, hyperactivity, impulsivity, and irritability. Our clinic addresses associated disorders including anxiety, depression, and substance use while focusing on optimizing executive function, emotional regulation, and impulse control through tailored treatment strategies.

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Understanding ADHD: Causes, Symptoms, and Treatment Options at North Shore ADHD Clinic

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  1. North Shore ADHD Clinic Creating Clarity northshoreadhd.com Anthony M. Ocana MSc, MD, CCFP, ABAM 604-913-8183 ext 2235

  2. ADHD Brain – based disorder of performance Caused by Dopamine Circuit Dysfunction Epidemiology • 8-10 % of children • 4-5% of adults (NIMH 2003, Kessler 2006) • Higher prevalence than GAD, Bipolar or Schizophrenia • More than 1.5 million Canadians Hallmark Symptoms • Distractibility • Hyperactivity • Impulsivity • Irritability Getty Images NorthShore ADHD Clinic

  3. Dopamine Circuits Attention - optimizes signal, filters noise Impulse Control - don’t do what you’re not supposed to do Executive Function - do what you are supposed to do Motor Control - keep doing it until you are finished Reward - regulate emotions required to complete the task NorthShore ADHD Clinic

  4. Dopamine Circuit FunctionsR. Barclay PhD Behavioral Inhibition – don’t do what your are not supposed to do Executive Function – do what you are supposed to do Motor Control – keep doing what you are supposed to do, until finished NorthShore Adult ADHD Clinic

  5. Executive Function 1. Non-verbal working memory hindsight, foresight, hold an image in mind, keep promises, co-operate 2. Verbal working memory reflection, self talk, self instruction, rule guided behavior, reading comprehension 3. Regulation of emotion – motivation, resilience, engagement 4. Problem Solving choose behavior based on imagined scenarios, verbal fluency, NorthShore Adult ADHD Clinic

  6. ADHD and Associated Disorders Prevalence (%) Biederman. Am J Psychiatry. 1993;150(12):1792. Biederman Psychiatry Research 1994;53:13 Shekim. Compr Psychiatry. 1990;31(5):416. NorthShore ADHD Clinic

  7. Depression/ Anxiety ADHD SubstanceUse Psychosis BipolarDisorder ImpulseControlDisorder EatingDisorder ASPD ConductDisorder Addiction and Co-morbid Disorders NorthShore ADHD Clinic

  8. Contact Us NorthShore ADHD Clinic #201 – 520 17th St. West Vancouver 604-913-8183 ext 2235 – Heather www.northshoreadhd.com NorthShore ADHD Clinic

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