Why your child isn't sleeping — and what you can actually do about it: a psychiatrist's guide for parents

Sleep & Child Psychiatry

Why your child isn't sleeping — and what you can actually do about it: a psychiatrist's guide for parents

Dr. Farrah Laviolette, MD Child & Adolescent Psychiatry 11 min read

"In my practice, sleep problems are among the most common concerns I hear from parents — and among the most underestimated. Sleep is not a passive state. It is when the brain consolidates memory, regulates emotion, and repairs itself. When children don't sleep, everything else suffers."

40–50%

of children experience a sleep problem at some point

Mindell et al., 2006 — Sleep Medicine Reviews

73%

of high school students get less than the recommended sleep

CDC, 2020 — Youth Risk Behavior Survey

3×

higher risk of depression in sleep-deprived adolescents

Gregory & O'Connor, 2002 — J Child Psychol Psychiatry

7 hrs

average sleep US teens get — 2 hrs below what they need

Wheaton et al., 2018 — CDC MMWR

How much sleep does your child actually need? (AAP & AASM guidelines)

12–16 hrs

Infants
4–12 months
(including naps)

11–14 hrs

Toddlers
1–2 years
(including naps)

10–13 hrs

Preschool
3–5 years
(including naps)

9–12 hrs

School-age
6–12 years

8–10 hrs

Teenagers
13–18 years

Important note

These are minimums. Consistently sleeping at the low end of the range is not the same as thriving.

Source: American Academy of Pediatrics (AAP) / American Academy of Sleep Medicine (AASM), 2016

Why sleep matters more than most parents realize

Sleep is not downtime. It is the most neurologically active period of a child's day. During sleep, the brain processes and consolidates learning, prunes unnecessary neural connections, and clears metabolic waste. The hippocampus replays the day's learning during deep sleep, embedding it into long-term memory.

For children and adolescents, sleep deprivation has measurable consequences across every domain: emotional regulation, impulse control, immune function, academic performance, physical growth, and mental health. A chronically sleep-deprived child is not just tired — they are neurologically impaired.

• Mental health link is direct. Sleep problems predict the onset of depression and anxiety in children — and are also caused by them. Treating sleep often improves mood, and vice versa. (Alvaro et al., 2013 — Sleep Medicine Reviews)
• Academic performance is measurably impacted. Students sleeping less than 8 hours score significantly lower on tests, have higher absenteeism rates, and show reduced attention and working memory. (Curcio et al., 2006)
• Physical health consequences are real. Chronic sleep deprivation in children is associated with obesity, reduced immune function, higher rates of accidental injury, and disrupted growth hormone secretion. (Spiegel et al., 1999)

Sleep problems in children vs. adolescents: key differences

Children (3–12)

Adolescents (13–18)

Bedtime resistance and stalling

Night wakings, calling for parents

Nightmares and night terrors

Sleepwalking (peaks ages 4–8)

Fear of the dark, separation anxiety

Early morning waking (toddlers)

Difficulty transitioning off naps

Delayed sleep phase (can't sleep before midnight)

Difficulty waking in the morning

Excessive daytime sleepiness

Insomnia driven by anxiety or depression

Device use displacing sleep

Weekend sleep reversal (social jet lag)

Hypersomnia (sleeping 12+ hours)

Sources: Owens, 2008 — Pediatric Clinics; Carskadon et al., 1998 — Sleep

The most common sleep disorders in children and adolescents — what parents need to know

Behavioral insomnia of childhood

The most common sleep disorder in young children. Two types: sleep-onset association (child only sleeps with parent present) and limit-setting type (chronic bedtime resistance). Affects 10–30% of young children. Highly treatable with behavioral intervention. (Mindell et al., 2006)

Delayed sleep phase disorder

Biologically driven in adolescents — the circadian rhythm shifts 2–3 hours later during puberty. Teens cannot fall asleep before 11pm–midnight regardless of how tired they are. Often misread as laziness or defiance. Affects 7–16% of teens. (Gradisar et al., 2011)

Obstructive sleep apnea (OSA)

Affects 1–5% of children. Caused by enlarged tonsils/adenoids or obesity. Signs: loud snoring, witnessed breathing pauses, restless sleep, mouth breathing, bedwetting, daytime hyperactivity (often misdiagnosed as ADHD). Requires formal evaluation. (Marcus et al., 2012 — Pediatrics)

Restless legs syndrome (RLS)

Underdiagnosed in children. Uncomfortable "creepy crawly" sensations in legs at rest, with urge to move. Peaks before bedtime. Linked to iron deficiency and family history. Affects 2–4% of children. Often dismissed as "growing pains." (Picchietti et al., 2007)

Night terrors vs. nightmares

Night terrors occur in the first third of the night — child is inconsolable but not truly awake, with no memory next day. Nightmares occur in the second half (REM sleep) — child awakens fully and can describe the dream. Night terrors affect up to 17% of children ages 3–8 and are benign. (AASM)

Insomnia related to anxiety/depression

The most common sleep problem in adolescents seen in psychiatric practice. Difficulty falling asleep (racing thoughts) or early morning waking (depressive signature) are key diagnostic signals. Treating the underlying disorder is essential — sleep medication alone is not sufficient. (Benca, 2005)

Evidence-based sleep tips for parents — by age group

Young children (3–8 years)

Consistent bedtime routine is the single most powerful tool. A predictable 20–30 min routine (bath → book → lights out) significantly reduces sleep-onset time and night wakings. (Mindell et al., 2009 — Sleep)

Teach independent sleep onset. If your child can only sleep with you present, they will call for you every time they cycle through light sleep (every 90–120 min). Put them down drowsy but awake.

Light matters. Dim lights 30–60 min before bed. Nightlights should be red or amber — not blue or white. Darkness triggers melatonin release.

School-age children (9–12 years)

Set a firm devices-off rule 60 min before bed. Blue light from screens suppresses melatonin production by up to 3 hours. (Chang et al., 2015 — PNAS) Devices should charge outside the bedroom — every night.

Watch for anxiety as the hidden driver. Children who stall at bedtime with questions and worries may be experiencing anxiety that surfaces when distractions disappear. Address the worry, not just the behavior.

Keep weekday and weekend bedtimes within 1 hour of each other. Social jet lag — sleeping in 2+ hours on weekends — disrupts the circadian rhythm and makes Monday mornings significantly harder.

Adolescents (13–18 years)

Work with the biology, not against it. Delayed sleep phase is real. Asking a teen to fall asleep at 9:30pm is biologically equivalent to asking an adult to sleep at 7pm. The AAP recommends middle and high schools start no earlier than 8:30am for this reason.

Phone in a different room — non-negotiable. 73% of teens who sleep with their phone nearby report it waking them at night. The average teen checks their phone 9 times during sleep hours. (Levenson et al., 2016)

Caffeine cutoff at 2pm. Caffeine has a 5–6 hour half-life. A 3pm energy drink still has significant caffeine in the bloodstream at 9pm.

Universal tips for all ages

Exercise promotes sleep quality — but timing matters. Regular physical activity improves sleep onset and duration. Vigorous exercise within 2 hours of bedtime can delay sleep onset in some children. Morning or afternoon exercise is best. (Reid et al., 2010)

The bedroom is for sleep only. When beds are used for homework, screens, and eating, the brain stops associating the bed with sleep. This is stimulus control — a core principle of CBT-I.

Melatonin: helpful but misunderstood. Low doses (0.5–1mg) taken 30–60 min before target bedtime work better than high doses taken at actual bedtime. Always consult your pediatrician before use. Not for nightly indefinite use.

Screens and sleep: what the science actually says

Peer-reviewed research summary

• Blue light is the main biological culprit. Screens emit blue-wavelength light that signals the brain it is daytime, suppressing melatonin production for up to 3 hours. Even 2 hours of screen exposure before bed measurably delays sleep onset. (Chang et al., 2015 — PNAS)
• Cognitive arousal matters as much as light. Exciting games, social media notifications, and videos activate the sympathetic nervous system. The brain stays alert long after the screen is off, regardless of blue light.
• Sleep displacement is cumulative. Each additional hour of screen time before bed is associated with a 9-minute delay in sleep onset and 10-minute reduction in total sleep time in school-age children. (Hale & Guan, 2015 — Sleep Medicine Reviews)
• Practical solution that works. A centralized family charging station outside all bedrooms — a household rule, not a punishment — is the most evidence-supported intervention for screen-related sleep disruption. Consistency across all family members models the expectation.

Clinical guidelines & treatment resources

AAP Sleep Policy Statement (2016) — Recommends structured sleep education at every well-child visit. Endorses behavioral sleep interventions (not medication) as first-line treatment for behavioral insomnia in young children. Screen-free bedrooms endorsed for all ages.

AASM Pediatric Sleep Guidelines — The gold standard for diagnosing and treating pediatric sleep disorders. Recommends polysomnography (overnight sleep study) for suspected OSA, RLS, or narcolepsy. Primary care evaluation is always the first step.

CBT-I (Cognitive Behavioral Therapy for Insomnia) — The most evidence-supported treatment for chronic insomnia in children and adolescents. Includes sleep restriction, stimulus control, sleep hygiene education, and cognitive restructuring. Superior to sleep medication in long-term outcomes. (Morin et al., 2006)

AAP School Start Time Policy (2014, reaffirmed 2019) — The AAP officially recommends middle and high schools start no earlier than 8:30am. Early start times are a public health issue — not a parenting or motivation problem. Parents can advocate at the district level.

When to consult your pediatrician or a child psychiatrist

• Loud, habitual snoring — especially with witnessed pauses in breathing or gasping
• Bedwetting that begins or returns after a period of being dry in school-age children
• Extreme daytime sleepiness despite adequate time in bed — especially if sudden onset
• Chronic insomnia lasting more than 3 months despite consistent sleep hygiene efforts

• Sleep problems accompanied by anxiety, depressed mood, irritability, or school refusal
• Frequent sleepwalking — especially if the child is in danger of leaving the home
• Hypersomnia: consistently sleeping 12+ hours and still unable to function during the day
• Uncomfortable leg sensations at night disrupting sleep onset — possible restless legs syndrome

A final word from my practice: Sleep is one of the most powerful and underutilized tools for children's mental and physical health. Before we add a diagnosis, before we add a medication, I always ask: how is this child sleeping? The answer almost always matters. If your child is struggling — behaviorally, emotionally, academically — and sleep has not been evaluated, that is always the right place to start. A well-rested child is a different child.