ADHD Symptoms

ADHD symptoms fall into two main categories: Inattention and Hyperactivity-Impulsivity. Most adults have a mix of both.

Based on DSM-5 criteria

Inattention

9 DSM-5 symptoms (5+ for adult diagnosis)

  • Careless mistakes / misses details

    Often fails to give close attention to details or makes careless mistakes in schoolwork, work, or other activities.

  • Difficulty sustaining attention

    Often has difficulty sustaining attention in tasks or play activities (e.g., lectures, conversations, lengthy reading).

  • Does not seem to listen

    Often does not seem to listen when spoken to directly; mind seems elsewhere, even in the absence of obvious distraction.

  • Fails to follow through

    Often does not follow through on instructions and fails to finish tasks (loses focus or goes off track, not due to opposition).

  • Difficulty organizing tasks

    Often has difficulty organizing tasks and activities - trouble managing sequential tasks, keeping materials orderly, managing time.

  • Avoids sustained mental effort

    Often avoids, dislikes, or is reluctant to engage in tasks that require sustained mental effort (e.g., schoolwork, preparing reports).

  • Loses necessary things

    Often loses things necessary for tasks and activities (e.g., keys, wallet, phone, glasses, documents).

  • Easily distracted

    Often is easily distracted by extraneous stimuli - in adults, this can include unrelated thoughts.

  • Forgetful in daily activities

    Often forgetful in daily activities - chores, errands, returning calls, paying bills, keeping appointments.

Hyperactivity-Impulsivity

9 DSM-5 symptoms (5+ for adult diagnosis)

  • Fidgets or squirms

    Often fidgets with or taps hands or feet, or squirms in seat.

  • Leaves seat unexpectedly

    Often leaves seat in situations when remaining seated is expected (e.g., leaves their place in meetings or workplace).

  • Runs or climbs in inappropriate situations

    Often runs about or climbs in situations where it is inappropriate. In adults: often feels restless.

  • Unable to engage quietly

    Often unable to play or take part in leisure activities quietly.

  • Often "on the go" or driven by a motor

    Is often "on the go," acting as if "driven by a motor" - uncomfortable being still for extended periods (e.g., in restaurants, meetings).

  • Talks excessively

    Often talks excessively, sometimes without awareness of how much or how quickly they are speaking.

  • Blurts out answers

    Often blurts out an answer before a question has been completed, or finishes other people's sentences.

  • Difficulty waiting turn

    Often has difficulty waiting his or her turn - waiting in line, waiting for a table at a restaurant.

  • Interrupts or intrudes on others

    Often interrupts or intrudes on others (e.g., butts into conversations, games; uses others' things without permission).

How Symptoms Present in Adults

ADHD symptoms can look quite different in adults compared to children. Overt hyperactivity often diminishes, while subtler manifestations become more prominent:

Internal Restlessness

Rather than running around, adults feel mentally restless - difficulty relaxing or "turning off" the mind.

Time Blindness

Difficulty perceiving how much time has passed; chronic lateness, underestimating task duration, missing deadlines.

Emotional Dysregulation

Heightened sensitivity to rejection, quick frustration, rapid mood shifts - often more impairing than attention issues.

Executive Dysfunction

Difficulty initiating tasks, planning, prioritizing, and transitioning between activities - even enjoyable ones.

What WFIRS-S Measures

While ASRS measures symptoms, the Weiss Functional Impairment Rating Scale - Self-Report (WFIRS-S) measures how much those symptoms actually affect daily life. It's a 69-item questionnaire covering seven domains: Family, Work, School, Life Skills, Self-Concept, Social, and Risky Activities.

Each item is rated 0 (Never) to 3 (Very Often), with an option to mark an item as not applicable. A domain is flagged as impaired if any single item scores 3, or if two or more items score 2 - reflecting that even one severe difficulty, or a pattern of moderate ones, can be clinically meaningful.

WFIRS-S doesn't diagnose ADHD by itself - it's meant to complement a symptom checklist like ASRS by showing where symptoms translate into real impairment, which is exactly what clinicians look at when deciding whether a diagnosis and treatment are warranted.

Remember: This screening tool is for informational purposes only. A formal diagnosis of ADHD requires a comprehensive evaluation by a qualified healthcare professional who can consider your complete medical history, symptoms, and life circumstances.

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