Adult attention-deficit/hyperactivity disorder

Disease Description (Causes and Symptoms)

• Definition summary: Adult attention-deficit hyperactivity disorder (Adult ADHD) is a neurodevelopmental disorder in which persistent inattention, impulsivity, hyperactivity (which in adults may manifest as inner restlessness and switching between multiple tasks) and executive dysfunction interfere with daily functioning (work, interpersonal relationships, home life, etc.). During diagnosis, it is assessed whether some symptoms were present or their characteristic pattern existed from childhood (before age 12 according to DSM-5 criteria).
• Causes and pathophysiology:
  • Genetic predisposition (family history) and environmental factors (prematurity, low birth weight, brain injury, etc.) are involved in combination.
  • Imbalances in the function of the brain’s attention, reward and behavioral regulation circuits (such as the prefrontal cortex–basal ganglia circuits) and neurotransmitters (dopamine and norepinephrine) are considered key mechanisms.
• Main symptoms (including adult features):
  • Difficulty concentrating and sustaining attention (failure to finish tasks, careless mistakes, easily distracted)
  • Problems with organization and planning, poor time management, frequent misplacement of items
  • Impulsive speech and behavior (blurting out during conversations, making spontaneous decisions)
  • Excessive activity due to inner restlessness or avoidance of boredom, or multitasking
  • Problems with emotional regulation (overreacting, sudden anger, low self-esteem)
  • Comorbid conditions: depression, anxiety disorders, substance (alcohol, nicotine, etc.) abuse, and personality disorders (e.g., borderline personality disorder) are common

Treatment Methods

• Standard treatment approach
  1. Medication treatment
     • Central nervous system stimulants (first-line recommendation): methylphenidate (e.g., immediate-release and extended-release formulations), amphetamine-based medications (vary by country of use). They act quickly and are most powerful for improving attention and concentration.
     • Nonstimulants (alternative or adjunctive treatment): atomoxetine, bupropion, etc.
     • Alpha-2 agonists: clonidine and guanfacine may help with some symptoms (impulsivity/hyperactivity and sleep).
     • Medication selection is individualized based on symptom patterns, comorbidities (anxiety, depression, cardiovascular disease, etc.), risk of medication abuse, and the side-effect profile.
  2. Psychosocial treatment
     • Adult-specific cognitive behavioral therapy (CBT): training in organization and time-management skills, impulse and emotion regulation, and work and interpersonal strategies.
     • ADHD coaching and work or academic support (use of planners, structuring the environment).
     • Family and colleague education: supporting symptom management through understanding and support.
  3. Lifestyle management and supportive strategies
     • Regular sleep, exercise, and management of caffeine, alcohol and drugs (misuse).
     • Adjusting the work environment (blocking noise, dividing tasks, planning breaks).
• Precautions and risk of complications
  • Medication side effects: insomnia, decreased appetite and weight loss, increased heart rate/blood pressure, anxiety and agitation, and rarely psychotic symptoms or worsening of obsessive-compulsive symptoms or tics.
  • Because central nervous system stimulants carry a risk of dependence and abuse, a medication history and substance-use assessment are necessary.
  • If certain underlying conditions are present, such as cardiovascular disease, arterial disease or hyperthyroidism, evaluation before medication use (including electrocardiography, blood pressure measurement and cardiovascular risk assessment) is recommended.
  • If left untreated, reduced functioning at work or school, interpersonal problems, increased risk of substance abuse, and increased risk of depression and suicide may occur.
• Monitoring
  • At treatment initiation and when increasing the dose, regularly check blood pressure and heart rate, weight, sleep and mood, medication effects (symptom improvement), and side effects.
  • Check for drug interactions (e.g., concomitant use with MAOIs is prohibited).

Outpatient Visit Checklist (Including Example Questions)

• Items to prepare (useful to bring)
  • List of current medications and supplements (including doses and administration times)
  • Past diagnosis and treatment history (including whether ADHD was diagnosed during childhood)
  • Previous test results (such as electrocardiograms and blood pressure readings) and records of major chronic diseases
  • Records of recent changes in symptoms (when they began and in what situations they worsen); printout of ASRS (Adult ADHD Self-Report Scale) results, if available
  • Records of sleep and the amount of caffeine, alcohol, cigarettes and drugs used
  • Examples of impaired functioning at work, school or home (absences, mistakes, etc.) and notes on behaviors observed by others
  • Family history (ADHD, mental illness, substance abuse, etc.)
  • If possible, bring an acquaintance (spouse or colleague) to share their observations
• Key information to provide to the doctor during the outpatient visit (examples)
  • "When the symptoms first began (including during childhood) and what the current symptoms are like"
  • "My current lifestyle (sleep, alcohol use, smoking and drug use) and stressors"
  • "My past experience with medication treatment and its effects and side effects"

Examples of General Questions to Ask the Doctor

• What are the expected effects and possible side effects of this medication (the recommended medication)?
• How do my underlying conditions (e.g., hypertension or anxiety disorder) affect the choice of medication?
• After starting the medication, how often and what should be monitored (electrocardiography, blood pressure, weight, etc.)?
• How should I stop taking the medication? Are there withdrawal or dependence issues?
• Aside from medication treatment, what lifestyle management methods can I apply immediately, or what adjustments do you recommend at work or school?

Examples of Disease-Specific Questions

• "My symptoms were not clear during childhood and began in adulthood. What are the criteria for diagnosing adult ADHD? How is the condition approached when childhood symptoms were absent?"
• "I have a history of medication abuse (or substance use). What alternatives or additional management are needed for safe treatment when using ADHD medications, especially stimulants?"

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(Note: Diagnosis and treatment vary considerably from person to person, so the information above is general. An accurate diagnosis and treatment plan should be determined through consultation and evaluation by a specialist.)