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ADHD or sleep apnea? When symptoms overlap… but don’t tell the whole story

Associated diseases

Chronic fatigue, inattention, impulsivity, irritability… These symptoms, often associated with ADHD, are sometimes signs of a little-known sleep disorder: obstructive sleep apnea (OSA). At La Clef du Sommeil , many patients discover, after a sleep study, that their cognitive problems or agitation are not the result of ADHD, but of fragmented sleep.

Comparative prevalence: ADHD in adults/adolescents vs. sleep apnea

ADHD in the population :

In Canada: ADHD affects 5-7% of children and 4-6% of adults (CADDAC).

Globally, 2.58% of adults continue to meet the criteria for ADHD (Wikipedia).

Sleep apnea (SAOS) :

Among people consulted for a sleep disorder, 24% have an apnea-hypopnea index (AHI) ≥ 5 (mild disorder) and 15% have AHI ≥ 10 (moderate) (Wikipedia).

These figures are based on a sample of patients who have already undergone a diagnostic procedure – the prevalence in the general population is undoubtedly higher.

Notable co-occurrence in adolescents:

Between 25% and 57% of children and adolescents diagnosed with ADHD also had sleep apnea or disturbed breathing at night (Wikipedia, Frontiers).

Strikingly, 65% of children with ADHD also suffered from a sleep disorder, compared with just 17% in the control group (Frontiers).

Apnea treatment alone can radically transform symptoms

After effective apnea treatment (such as CPAP or a customized solution), many of our adult patients report remarkable changes:

  • Improved concentration.
  • Stabilized memory.
  • Reduced impulsivity.
  • Renewed energy for everyday life.

These improvements may lead them to question an initial diagnosis of ADHD, and this is where our role is decisive.

When sleep deprivation “mimics” ADHD

Obstructive sleep apnea (OSA) leads to frequent breathing cessation and oxygen depletion during the night. The brain, deprived of restorative sleep, displays :

  • Brain fog.
  • Attention and memory disorders.
  • Hyperactivity or apparent restlessness.
  • Difficulties with emotional regulation.

These are all symptoms often associated with ADHD – but which diminish significantly with the right treatment.

How can you tell if your symptoms are sleep-related?

You’ve been diagnosed with ADHD, but you snore, wake up tired or feel drowsy during the day?
First consult a sleep specialist to rule out or confirm OSA. At La Clef du Sommeil , we offer :

  • Complete sleep screening, with polysomnography if necessary.
  • Personalized post-diagnostic follow-up.
  • Targeted solutions, adapted to your night-time reality.

Visual summary: Key comparison

Population / TroubleApproximate prevalence
Children with ADHD5-7% (Canada)
Adults with ADHD4-6% (Canada), 2.58% global (Wikipedia, Wikipedia, CADDAC)
Sleep study patients with AHI ≥ 524%, AHI ≥ 10: 15% (Wikipedia)
ADHD children/adolescents with sleep disorders25-57% (Frontiers)
ADHD children with sleep disorders vs. controls65% vs 17% (Frontiers)

Things to remember

ADHD and sleep apnea share many symptoms – but their origins and treatments differ.
A sleep assessment can be crucial before considering a new diagnosis or treatment adjustment.

Important note – what we don’t do

Although we are sleep experts, we do not carry out assessments or diagnose ADHD. For this, please contact specialized professionals such as neuropsychologists or psychiatrists. We are committed to working seriously and transparently on sleep only.

Want to know more? If you recognize yourself in these symptoms, don’t wait any longer:

Schedule a sleep study today.

Call us at 1-877-408-3838 for a complete evaluation and a customized solution.

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