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How do i know if my 7 year old has adhd?

There's no blood test or scan for ADHD. A diagnosis requires a clinical assessment (by a doctor, pediatrician, or psychologist) that finds a persistent pattern of inattention and/or hyperactivity-impulsivity, present in more than one setting (like home AND school), that's interfering with your child's functioning.

Canadian and American pediatric guidelines both stress that information must come from multiple sources, not just parent observation alone.

Strength of evidence

Strong

Based on clinical practice guidelines from the Canadian Paediatric Society, CADDRA, and the American Academy of Pediatrics, all developed through systematic literature review and expert consensus.

What the evidence says

You can't diagnose ADHD yourself just by watching your child at home - it needs a proper evaluation. Canadian guidelines (CPS and CADDRA) recommend that a clinician gather information from parents AND teachers, since core symptoms need to show up in more than one setting, not just one place. Standardized rating scales filled out separately by parents and teachers (like the SNAP-IV-26) are commonly used to help document this.

The diagnostic criteria (DSM-5) generally require six or more symptoms of inattention and/or hyperactivity-impulsivity that have lasted at least 6 months, are out of step with what's typical for a child's age, started before age 12, and are clearly getting in the way of school, friendships, or family life - not just occasional fidgeting or daydreaming. A doctor will also want to rule out other things that can look like ADHD, such as anxiety, sleep problems, learning disabilities, or hearing issues, since these can cause similar behaviours. The American Academy of Pediatrics guideline notes the average age of ADHD diagnosis is 7, so this is a very common time for parents to start asking these questions.

If you're concerned, the right first step is talking to your child's doctor or pediatrician, who can start the assessment process or refer you to someone who specializes in ADHD evaluation.

Sources

✓Reviewed by CH, MD, FRCPC

Reviewed by a specialist physician certified by the Royal College of Physicians and Surgeons of Canada, who has read this answer against the sources listed above and confirmed it reflects them. That is not medical advice about your child. How we review

Answer checked August 2, 2026

Educational information only. Not medical advice, not a diagnosis, and no doctor-patient relationship is created by using this. Founded Parent has not examined your child and does not know their history, so this may not apply to you. In an emergency, call your local emergency number. What Founded Parent cannot do

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Educational information only. Not medical advice, not a diagnosis, and no doctor-patient relationship is created by using this. Founded Parent has not examined your child and does not know their history, so its answers may not apply to you. Never delay or disregard advice from a qualified health professional because of something you read here. In an emergency, call your local emergency number.