ADHD Resource Centre
ADHD Symptoms in Children
Learn common ADHD symptoms in children, how they may affect school and home, and when an ADHD assessment may be worth considering.
ADHD can affect more than schoolwork
In children, ADHD can influence learning, routines, friendships, behaviour, emotional regulation and family life. Symptoms can look different depending on age, environment and individual strengths.
Signs of inattention
Parents or teachers may notice frequent daydreaming, missed instructions, careless mistakes, difficulty completing work, losing belongings, disorganization, distractibility or forgetting routine tasks.
Signs of hyperactivity and impulsivity
Some children fidget, leave their seat frequently, run or climb when inappropriate, talk excessively, interrupt, have difficulty waiting or act before thinking. Other children have predominantly inattentive symptoms and may be less disruptive.
The setting matters
Children naturally vary in activity and attention. ADHD assessment considers whether symptoms are excessive for developmental level, occur across important settings and cause meaningful impairment.
School information can be valuable
Teachers can provide information about attention, behaviour, learning and peer interactions in a structured environment. Parent/caregiver history remains important because ADHD assessment considers functioning across settings.
Other explanations should be considered
Learning difficulties, anxiety, sleep problems, hearing or vision concerns, developmental differences, stress and other medical or mental-health conditions can affect attention and behaviour.
When to consider assessment
Assessment may be helpful when persistent attention, hyperactivity or impulsivity difficulties are interfering with learning, relationships, routines or family functioning.
Common questions
Frequently asked questions
Does being active mean a child has ADHD?
No. Activity level varies normally. ADHD assessment considers developmental appropriateness, persistence, settings and impairment.
Do teachers need to be involved?
Teacher information can be very helpful because it provides another view of functioning, but the exact assessment process depends on the child and circumstances.
Can inattentive children have ADHD without being disruptive?
Yes. Some children primarily show inattentive symptoms and may be less likely to draw attention through behaviour.
Keep learning
Related ADHD resources
Medically reviewed by Darwin Lahue, MSc, MN, NP
Medical Director, Tersalus Medical Clinic
This information is provided for general education and does not replace an individualized medical assessment.