My child has trouble concentrating at school: what if the cause isn't in his head?

At 7:47 p.m. on a Tuesday, Sophie closed the math exercise book of 9-year-old Léa. They've repeated the same page three times. Léa is crying. Not because she doesn't understand - she's had harder problems. She's crying because she's exhausted. She woke up three times during the night. She woke her mother twice. And then, at 7:47 p.m., her teacher wrote in the diary: «Léa daydreams a lot in class. I suggest you talk to your doctor.»

Sophie tried everything. Bedtime at 8pm. The evening routine. Screens off at 6pm. The glass of warm milk. Nothing changes. Before thinking ADHD or talking medication, there's a clue that's rarely mentioned at the pediatrician's: Léa's nervous system may be functioning properly, but it's not transmitting properly. And transmission starts in the spinal column.

To the Clinique Chiro Ste-Rose, in Sainte-Rose, Laval, Dr. Michèle Bernatchez, Chiropractor, DC, BSc and Dr. François Poirier, Chiropractor, DC, BSc have been accompanying Quebec families with exactly this profile for over thirty years. Not just children with back pain. Children who sleep badly, who complain of fatigue, who daydream in class, who have mild headaches at the end of the day - without a clear medical cause. Some of these children have spinal dysfunctions that irritate the nerves and disturb the quality of deep sleep. Sleep consolidates learning. When it is fragmented, attention in class deteriorates. Understanding this mechanism changes the conversation at home.

Why can your child pay attention to video games but not to homework?

Because the two activities don't demand the same of the brain. A video game captures attention through continuous stimulation. A school assignment, on the other hand, requires sustained, directed, voluntary attention - and this depends directly on the quality of the previous night's sleep.

If your child sleeps poorly - waking up at night, uncomfortable posture, mild neck pain that can't be expressed in adult words - his brain doesn't complete the deep sleep cycles that consolidate memory and restore attention span. He wakes up tired. By 1:30 p.m. in class, the tank is empty. It's neurological, not behavioral.

And this is important: it doesn't always mean that your child has a diagnosed attention deficit disorder. It could mean that a poorly regulated bodily mechanism is preventing him or her from recovering. The nuance changes everything.

The link between spinal disorder, sleep and your child's concentration

The spinal column isn't just a pile of bones. It's a nerve highway. The spinal cord runs through the center, and from each vertebra emerge nerves that communicate with every organ in the body - including the brain and the structures that regulate sleep.

When a vertebra loses a little mobility - a microtrauma at birth, a fall on a bicycle, hours bent over a tablet, a school bag carried on one shoulder for two years - the nerves passing nearby can become irritated. Not compressed to the point of acute pain. Irritated. The nerve signal becomes distorted. And this distorted signal is what can disrupt involuntary functions such as sleep rhythm or autonomic nervous system regulation.

In Quebec, the Institut national de santé publique published in 2025 its monitoring indicator on sleep among high school students, based on the Enquête québécoise sur la santé des jeunes au secondaire (EQSJS) 2022-2023. The proportion of high school students who don't sleep the recommended number of hours rose from 28 % to 42 % between the last two survey cycles, and sleep deprivation is more pronounced among girls than boys. You can consult Quebec data from INSPQ. When sleep is insufficient or fragmented, memory consolidation and the restoration of attentional functions are the first functions to suffer, and it shows in class the next day.

The chiropractic approach, on the other hand, does not treat fatigue. It assesses whether a spinal dysfunction is contributing to poor-quality sleep, and if so, puts the mechanics back into motion. The rest - cognition, concentration, memory - follows the quality of sleep regained.

Why does your child change position three times a night without remembering?

Léa has been sleeping on her stomach, with her head turned 90 degrees to the left, since she was six years old. At 9:14 p.m., her cervical spine could no longer hold the position. She wakes up half-asleep, switches sides, goes back to sleep. Three or four times a night. She doesn't remember in the morning. But her brain hasn't had time to go into the deeper stages of sleep. In the morning, her mother asks her why she looks so tired. Léa shrugs. She doesn't know what to say.

We see this scene every week. A child who sleeps 10 hours on paper, but consumes only 6 or 7 in useful sleep. A neck that no longer has the mobility required to remain comfortable at night. A sleeping posture that has become a compensatory habit.

What a chiropractic examination evaluates: segment-by-segment mobility of the cervical spine, spontaneous posture, symmetry of amplitude. In twenty minutes, we know whether your child's spine is tolerating its sleeping position or whether it's compensating. And compensation, over months, ends up disturbing the nights.

ADHD or a child who sleeps badly: how can you tell the difference before going for a check-up?

The reflex of a worried parent is to go and see the pediatrician, who sometimes suggests a child psychiatry assessment. This is a legitimate step. Except that waiting times in Quebec often exceed a year, and in the meantime, school goes on.

Before moving in this direction, ask yourself two concrete questions:

First question Does your child sleep through the night without waking up, in a comfortable position, and get up rested without having to be shaken three times? If the answer is no on two of the three criteria, sleep may be the first thing to look into.

Second question Does your child complain of neck or back pain, stiffness or discomfort - however slight, however rare, even only in the morning? Children don't name pain the way we do. They say «my neck feels funny», «it stings in my back», «I don't like sleeping like this». These phrases are clues.

If both questions raise concerns, a neuro-musculo-skeletal evaluation before the psychological assessment makes sense. Not to replace. To clarify what we're looking for.

Chiropractic is for adults: so why evaluate my child?

That's the objection Sophie asked us the first time she called. And it's a reasonable objection, because most chiropractic clinic posters show adults with back pain.

The clinical reality is different. The techniques used in children are not the same as those used in adults. The pressure applied corresponds roughly to that used to check the ripeness of a tomato at the market. It's a touch, not a strong manipulation. Adjustments for children use gentle techniques, instrumented when more comfortable, and adapted segment by segment to the growing anatomy.

The other dimension of the objection is «is it safe?» The Quebec chiropractors' Code of Ethics strictly regulates pediatric practice. Before any treatment, a thorough examination identifies what falls within the scope of chiropractic care and what should be referred to another professional. If your child has a condition that falls outside our field of expertise, we tell you, and we refer you.

How long before you see a change in your child?

The honest answer: it depends on the cause and duration of the discomfort.

For a child with recent spinal dysfunction - a few months old - the first signs of change often appear within the first three to six visits. Less restless sleep. Easier waking. Fewer complaints of fatigue at 4 p.m. The teacher notices a change in posture in class.

For a child who has been compensating for years, it takes longer. The spine adapts to repeated stresses. Putting back into motion what has been frozen takes time. We sometimes speak of a few months of spaced visits.

And then there's the part that doesn't depend on us: the sleeping environment, mattress position, screen hygiene in the evening, the school bag. We'll go over these levers with you during the initial consultation. Getting your spine moving again is just one piece of the puzzle. Not the whole puzzle.

What are the three signs your child needs a chiropractic evaluation?

First sign Your child complains of chronic fatigue despite nights that seem normal on paper. He sleeps 10 hours, you don't hear him wake up, but in the morning, it's a disaster. This may indicate fragmented sleep that he's not memorizing.

Second sign Headaches in children: they have mild headaches at the end of the day, especially after school, and especially on days when they've been writing a lot or using a tablet. Cervical headaches in children do not resemble adult migraines. They are diffuse, poorly localized, often accompanied by a neck stiffness that the child cannot name.

Third sign - and this is the most subtle - he sleeps in a specific position, and always the same one. Head turned to one side. Arm tucked under pillow. Belly down with neck hyperextended. These compensatory positions become habitual. And habit, over time, shapes growth.

Your child's first visit to the clinic, step by step

The examination takes about 45 minutes. It begins with a conversation - with you and your child. We want to understand your child's sleep routine, history of falls, preferred positions and times of day when difficulties arise. Children often speak more freely when asked the right questions. Léa eventually said, «When I sleep on my left side, my hand gets weird.»

Next comes the postural and neuro-musculo-skeletal assessment. We observe gait, spontaneous posture and symmetry. Vertebral mobility is tested segment by segment, cervical flexibility is assessed, and hip and shoulder range of motion is examined. If necessary, an on-site MRI scan can be used to clarify the findings of palpation.

At the end of the visit, you leave with a clear conclusion: is your child a good candidate for chiropractic care or not? If yes, an age-appropriate care plan is proposed. If no, we explain why and refer you to the appropriate resource. No commitment. No pressure. That's been our approach for over thirty years.

You'll also find a useful supplement in our guide to numbness and sciatica if your child reports strange sensations in the arms or legs - a signal that merits rapid assessment.

Three months later

Three months after that evening at 7:47 p.m., Sophie wrote us a short e-mail: «Léa does her homework alone. It takes 25 minutes. Before, it took two hours with a crisis in the middle.» Léa sleeps on her side now - not because we told her to, but because her cervical spine has regained a mobility that makes this position naturally comfortable. Her teacher hasn't written in the diary for eight weeks.

If your child is going through a period where school becomes a daily struggle, and you feel like we're looking in the wrong place, you may be right. A chiropractic evaluation does not replace the pediatrician. It adds a neuro-musculo-skeletal reading to the conversation. And sometimes, it's that reading that changes the game.

Frequently asked questions from parents