How do clinicians evaluate coordination and attention difficulties when adult ADHD or developmental coordination disorder is suspected?

What clinicians look for

Clinicians assess whether coordination and attention difficulties are better explained by ADHD, developmental coordination disorder, or both. The goal is to understand the overall pattern rather than force a single label.

• Developmental history, including early motor skills and attention patterns
• Impairment across settings such as home, school, work, and daily routines
• Time course, including when difficulties began and how they have changed
• Alternative explanations that could better account for the symptoms

This matters because adult ADHD and developmental coordination disorder can overlap in everyday life. A careful assessment looks at lifelong patterns and current functional impact before drawing conclusions.

Adult signs that point past ADHD alone

Some signs suggest the problem is not only attention. DCD shows up in how the body carries out tasks, not just in staying focused on them.

• Frequent bumping into things, dropping objects, spilling, knocking items over, or misjudging space
• Slow or effortful dressing, fastening buttons, tying laces, shaving, applying makeup, or handling jewellery
• Messy, painful, or unusually slow handwriting, or needing to avoid handwritten tasks altogether
• Trouble learning practical motor sequences such as using tools, chopping food safely, folding laundry, parking, or backing up a car
• Feeling mentally exhausted after everyday physical tasks because each step must be consciously monitored
• Avoiding sports, dance, cycling, skating, or gym activities, often since childhood
• Difficulty with timing, rhythm, bilateral coordination, or doing two coordinated actions at once
• Poor motor planning, meaning the person knows what they want to do but cannot smoothly organise the movements

ADHD can make a person rush, miss steps, or lose track of materials. DCD is more likely when the person stays attentive yet still looks awkward, slow, or inefficient during the motor part of the task.

Childhood motor history is a major clue

The strongest clue is often a long motor story that started early. DCD does not begin suddenly in adulthood. Adults who were missed usually have a backward trail once someone asks the right questions.

• Were gross motor milestones late or unusually effortful, such as learning to ride a bike, catch a ball, or use stairs smoothly?
• Did teachers comment on handwriting, scissors, gym, art, or general clumsiness?
• Did the child avoid playground games or team sports because they felt behind?
• Were there repeated frustrations with tying shoes, utensils, zippers, backpacks, lunch containers, or crafts?
• Did report cards mention careless work when the real issue may have been speed and coordination?
• Was the teen capable academically but overwhelmed by labs, shop class, note-taking, driving practice, or jobs requiring manual speed?

CanChild, a Canadian research and clinical knowledge centre at McMaster University, has long described DCD as more than ordinary clumsiness and notes that the effects continue into adolescence and adulthood for many people. Their materials are often useful because they frame DCD in real daily tasks, not just test scores.

This history also helps separate DCD from problems caused later by pain, arthritis, concussion, vision changes, medication effects, substance use, or another neurological condition. If coordination problems are new, progressive, or one-sided, the assessment needs to look beyond ADHD and DCD.

Assessment clues clinicians look for

A good assessment does not stop at an ADHD checklist. Clinicians look for functional motor evidence across settings and over time.

1. A developmental interview. The clinician asks about early childhood motor milestones, school tasks, sports, handwriting, driving, injuries, and work demands.
2. Examples from daily life. Specific situations matter more than vague words like clumsy or disorganised.
3. Rule-outs. Vision problems, neurological illness, intellectual disability, muscle disorders, joint disorders, substance effects, and acquired brain injury may need consideration.
4. Collateral history when possible. A parent, partner, old report card, or school comments can reveal longstanding motor issues that the adult has normalised.
5. Attention versus execution. The clinician considers whether failures happen because the person forgets the step, or because the movement itself is difficult even when remembered.
6. Functional impact. DCD is more likely when coordination problems meaningfully affect school, work, self-care, driving, safety, or independence.

Canadian ADHD assessment guidance from CADDRA, and adult assessment guidance from CAMH, both support a broad developmental and differential diagnosis process rather than assuming every concentration complaint is ADHD. That is especially important when a person describes chronic clumsiness, very slow written work, or practical tasks that have always been harder than expected.

What to do next in Canada

The next step is to ask for an assessment that considers both ADHD and motor coordination history. If the interview focuses only on distractibility and never asks about handwriting, dressing, driving, sports, tools, or childhood clumsiness, part of the picture may be missed.

• Write down 5 to 10 concrete examples of coordination problems from home, school, work, and driving.
• Ask a parent or older relative what they remember about bike riding, sports, handwriting, shoe tying, and general clumsiness.
• Gather old report cards if you have them, especially comments about neatness, speed, gym, effort, or handwriting.
• List other factors that could affect coordination, such as pain, vision issues, concussion history, neurological diagnoses, or substance use.
• If you are seeking ADHD assessment, ask whether the process includes differential diagnosis and developmental history. Is an online ADHD diagnosis legitimate in Canada? explains what a proper assessment should include.

For people aged 12 to 17, assessment only is available in select provinces. If a teen’s main problem may be coordination, school function, handwriting, or motor planning, it helps to say that clearly when booking so the history taken is broad enough. See ADHD assessments for teens or province pages such as Ontario ADHD assessment if you need location details.