Insomnia in children and adolescents. Why it should not be overlooked and what actually helps?

Parents often start with a sentence that sounds harmless:

Over time, however, the night stops being a moment of rest and begins to be a daily struggle. Tension before falling asleep appears, tiredness in the morning, poorer emotional tolerance, and sometimes conflicts at home and difficulties at school. Insomnia in children and adolescents is often treated as a phase or a lifestyle effect, but in the clinic it is clear that chronic sleep problems can destabilise the entire nervous system.

Sleep is not an add-on to the day. It is one of the most important regulators of emotion, attention and stress resilience. When it is lacking, a child becomes frustrated more quickly, finds it harder to calm down, and an adolescent more often says they have no energy, withdraws from relationships and starts avoiding everyday responsibilities. The good news is that in most cases effective help is possible. However, it is necessary to understand what kind of difficulty we are dealing with and why sleep has stopped coming together.

When it is still a difficult period, and when it is insomnia worth treating

Not every difficult night means insomnia. Children get ill, experience stress, have intensive periods at school and this can temporarily worsen sleep. We think of a clinical problem when difficulties repeat and persist, and consequences appear during the day. The child is tired, irritable, has noticeably poorer concentration or finds it harder to function in relationships. In practice, it also matters whether the problem involves falling asleep, night wakings, waking too early, or simply sleep that does not provide restoration.

It is worth emphasising something very important. Sleep hygiene alone is a necessary foundation, but with established insomnia it is usually not enough. The best researched treatment method for insomnia is cognitive behavioural therapy for insomnia, known as CBT-I, and its effectiveness is also described in relation to adolescents.

Why insomnia affects a child's mental health so strongly?

Parents sometimes hear that their child is difficult or that the adolescent is overreacting. Meanwhile, with chronic sleep deprivation the nervous system operates more reactively. The threshold for frustration tolerance drops, tension increases, and emotions more quickly spiral out of control. This is why after several weeks of sleep problems, symptoms may appear that look like anxiety, low mood or heightened irritability.

Insomnia also tends to operate in a vicious cycle. The more a child fears they will not fall asleep again, the harder it is to fall asleep. The more a parent pushes, the more tension builds up in the evening. And the more tension, the less chance of peaceful sleep. At a certain point, sleep stops being a natural process and becomes a task to be completed.

The most common causes of sleep disorders in children and adolescents.

In younger children, a pattern of insomnia is frequently seen in which falling asleep depends on specific conditions. The child learns to fall asleep only in the presence of a parent, with rocking, within a specific ritual, and when they wake in the night they need the same conditions to fall back asleep. In such cases the source of the problem most often lies in a learned pattern.

In adolescents, a shift in circadian rhythm very often comes to the foreground. The body naturally tends towards later sleep onset and later waking, which conflicts with early morning school. This fits the medically described delayed sleep-wake phase disorder, known in the literature as DSWPD.

In the background there may also be anxiety, chronic stress, family tension, school overload, low mood and neurodevelopmental difficulties. In children with ADHD or on the autism spectrum, sleep problems are more frequent and more persistent, which is why a good treatment plan takes into account not only evening habits but also the broader psychological and environmental context.

Warning signs that should not be waited out

There are situations in which sleep disorders require faster assessment. If a child snores heavily, has pauses in breathing, is extremely sleepy during the day or their sleep is very restless, it is worth ruling out sleep-disordered breathing. If suicidal thoughts, self-harm, severe anxiety, panic attacks or a sudden deterioration in functioning appear at the same time, safety and prompt specialist consultation are the priority.

Diagnosis and first steps that bring clarity

A thorough assessment typically includes questions about sleep and wake times, night wakings, naps, daytime symptoms, as well as stressors and evening routines. A simple sleep diary kept for one or two weeks is very helpful. It does not need to be perfect. An approximate record of when the child falls asleep, how many times they wake and what their daytime functioning looks like is sufficient.

In adolescents, it is particularly important to distinguish between insomnia and a shifted biological clock, as the treatment approach will differ. Guidelines on circadian rhythm disorders describe the role of light and planned gradual shifting of the sleep schedule.

Evidence-based treatment — what actually works

Many families hear recommendations to limit screens and put the child to bed earlier. This may be important, but with established insomnia it usually does not resolve the problem. The best researched approach is CBT-I — a therapy that does not consist of general advice, but of a specific plan for changing the mechanisms that maintain insomnia. It includes regulating the daily rhythm, working with sleep-related anxiety, reducing behaviours that entrench the difficulty, and building the association that the bed is for sleep, not for struggling to sleep. Research and reviews on CBT-I in adolescents describe improvements in sleep parameters such as time needed to fall asleep and quality of rest.

In younger children, treatment more often relies on behavioural interventions carried out with the parent. The aim is for the evening to be predictable and calm, and for the child to gradually learn to fall asleep as independently as possible. This is not leaving the child without support. It is teaching the nervous system, in a considered way, that falling asleep is safe and repeatable.

Melatonin and safety considerations

Melatonin is popular, but in paediatric medicine it is not treated as a universal solution. The American Academy of Sleep Medicine emphasises that the decision to use melatonin in a child is worth discussing with a doctor, and that many sleep problems are better resolved through changes to the daily schedule and behaviours than through supplementation. Attention is also drawn to the fact that melatonin should be stored out of reach of children, as accidental ingestion does occur.

In selected clinical groups — for example children and adolescents on the autism spectrum — neurological guidelines recommend considering melatonin when behavioural interventions have not been effective.

It is also worth bearing in mind that products available as supplements may vary in their actual content, as highlighted in advisory publications on melatonin use in children.

If melatonin is being considered, it is best used as part of a broader plan. Without establishing a regular circadian rhythm and evening routines, the problem often returns.

What a parent can do today to avoid fuelling insomnia

The most important thing is to create an evening that is free of pressure. A child will not fall asleep faster because they hear for the tenth time that they must fall asleep. It usually works the opposite way. What makes the greatest difference is calm predictability, consistent times and routines that are not a punishment or a negotiation, but a signal to the nervous system that night is approaching.

With adolescents, it is worth watching for large differences between weekends and school days. Long lie-ins may bring temporary relief, but where delayed sleep phase is suspected they can be a factor that entrenches the rhythm shift. In such situations it is better to think in terms of gradual changes and stability.

If you suspect that anxiety or overload is behind your child's insomnia, treat sleep as an important indicator of their mental wellbeing. Sometimes real improvement begins not with another screen ban, but with the child receiving emotional support and the sense that they do not have to carry everything alone.

When to seek help

If sleep difficulties have been going on for several weeks, are affecting daytime functioning, are getting worse, or are accompanied by symptoms of anxiety, low mood or a noticeable decline at school, a consultation is a good step. Treating insomnia in children and adolescents can be very effective, particularly when it is based on methods with documented effectiveness, such as behavioural interventions and CBT-I.

Finally, it is worth saying something directly. Your child's insomnia is not your failure and does not have to stay with you permanently. Sleep can be rebuilt — but it usually requires a plan and an approach tailored to the cause, not to the first random solution that comes to hand.