A Dive Deeper Companion for Licensed Clinicians
Companion to: “ADHD and Sleep”
Audience: Licensed clinicians — MFTs, LCSWs, school psychologists, pediatricians, psychiatrists
Plain-language version: Why Your Child Can’t Fall Asleep: ADHD and the Midnight Brain
Clinical Overview
Sleep trouble is so common in ADHD that you should expect it. Depending on the study and the way sleep is measured, reported rates in children run from about one in four to more than two in three (Hvolby, 2015). Even so, sleep gets left out of many ADHD evaluations. That gap has a cost. Poor sleep can look like ADHD, can make ADHD worse, and can weaken the response to treatment.
So treat sleep as part of ADHD care. It deserves its own place in the assessment and in the treatment plan.
Common patterns include:
- Late sleep phase. The child falls asleep late by the clock, then sleeps well when allowed to follow his own schedule.
- Trouble falling asleep, no matter what the bedtime is.
- Restless, broken sleep.
- Hard mornings. Waking up is a struggle, and families often read it as defiance.
- Daytime sleepiness that shows up as hyperactivity or irritability, and not as yawning.
What Is Happening in the Brain
The link between ADHD and sleep seems to run through the brain’s chemical messengers. Dopamine helps drive attention and self-control, and it also appears to play a part in the body clock. In many children with ADHD and trouble falling asleep, the evening rise of melatonin comes late. That fits the late sleep phase families describe (Hvolby, 2015; van der Heijden et al., 2007). The drive to sleep may also build more slowly in some people. A late clock plus a slow build makes a child who is truly not tired at 9:00 and who struggles when the alarm rings at 6:30. Barkley’s (2015) view of ADHD as a problem of self-regulation helps here. A tired brain has even less to regulate with.
Other sleep conditions deserve a look.
Sleep-disordered breathing. Snoring and sleep apnea can bring on inattention, hyperactivity, and emotional swings that look like ADHD. A large review found a moderate link between breathing problems in sleep and ADHD in children (Faraone et al., 2021). If a child snores, breathes through the mouth, or has large tonsils, check this before starting stimulant medication. In several studies, treating the airway improved attention and behavior.
Restless legs and limb movements in sleep. These appear more often in people with ADHD, and treating them can help daytime symptoms.
Adults. In adults, formal sleep tests show no clear difference from other adults. Movement-based recordings show a longer time to fall asleep and lower sleep efficiency, and adults with ADHD report worse sleep quality (Faraone et al., 2021).
What the Research Says
Lost sleep can mimic ADHD. In school-age children without ADHD, small changes in sleep length moved emotional control and impulsivity at school. A half hour more helped, and less hurt (Gruber et al., 2012). A tired child can meet the symptom list without having ADHD. A child with ADHD who sleeps badly can look worse than the ADHD alone would predict. Sort out which is which before you decide.
Melatonin helps with falling asleep. In a randomized trial of children with ADHD and long-standing trouble falling asleep, melatonin moved sleep onset earlier (van der Heijden et al., 2007). A dose-finding trial in children with sleep-onset insomnia, without ADHD, found that timing mattered more than dose. A low dose given one to two hours before the child’s natural evening melatonin rise worked well (van Geijlswijk et al., 2010). Short-term studies look reassuring on safety, but long-term data are limited. A physician should guide dose and timing.
Treating sleep does not stand in for treating ADHD. But it is really helpful.
What to Do in Practice
Ask about sleep at every ADHD evaluation. Cover time to fall asleep, total sleep, night waking, snoring, restless legs, and daytime function. A standard parent questionnaire, such as the Children’s Sleep Habits Questionnaire, can help.
Mind the order. When a child snores and shows inattention and hyperactivity, refer for a sleep evaluation first, then decide about stimulant medication. Treating the wrong problem costs the family time.
Start with the basics for every child. A steady bedtime routine, lights low in the evening, screens off for the last two hours, and the bed used for sleep. These belong in the first treatment plan.
Consider melatonin. Have the family give it a few hours before the target sleep time, not at bedtime, and keep the dose under a physician’s guidance.
Look at medication timing. Stimulant doses late in the day often delay sleep onset. Recheck whenever the dose changes.
Explain it to the family. Tell parents that bedtime resistance and hard mornings usually come from the child’s clock, and not from stubbornness. This one conversation often lowers the temperature at home. Then give them two or three steps to start this week, not ten.
Check again over time. Sleep problems come back at school changes, after travel, and when family routines shift. Ask at every visit.
Consider neurofeedback. EEG biofeedback was rated “probably efficacious” for ADHD in a formal review (Monastra et al., 2005). Studies of sleep outcomes are limited. But my experience from using neurofeedback for over 35 years is that it usually helps people to sleep much better, sometimes after just one session.
When you treat the sleep, you treat the whole child. A child who sleeps better is a child who is easier to help.
References
Faraone, S. V., Banaschewski, T., Coghill, D., Zheng, Y., Biederman, J., Bellgrove, M. A., … Wang, Y. (2021). The World Federation of ADHD International Consensus Statement: 208 evidence-based conclusions about the disorder. Neuroscience & Biobehavioral Reviews, 128, 789–818. https://doi.org/10.1016/j.neubiorev.2021.01.022
Barkley, R. A. (Ed.). (2015). Attention-deficit hyperactivity disorder: A handbook for diagnosis and treatment (4th ed.). Guilford Press.
Gruber, R., Cassoff, J., Frenette, S., Wiebe, S., & Carrier, J. (2012). Impact of sleep extension and restriction on children’s emotional lability and impulsivity. Pediatrics, 130(5), e1155–e1161.
Hvolby, A. (2015). Associations of sleep disturbance with ADHD: Implications for treatment. ADHD Attention Deficit and Hyperactivity Disorders, 7(1), 1–18.
Monastra, V. J., Lynn, S., Linden, M., Lubar, J. F., Gruzelier, J., & LaVaque, T. J. (2005). Electroencephalographic biofeedback in the treatment of attention-deficit/hyperactivity disorder. Applied Psychophysiology and Biofeedback, 30(2), 95–114. https://doi.org/10.1007/s10484-005-4305-x
van der Heijden, K. B., Smits, M. G., van Someren, E. J. W., Ridderinkhof, K. R., & Gunning, W. B. (2007). Effect of melatonin on sleep, behavior, and cognition in ADHD and chronic sleep-onset insomnia. Journal of the American Academy of Child and Adolescent Psychiatry, 46(2), 233–241. https://doi.org/10.1097/01.chi.0000246055.76167.0d
van Geijlswijk, I. M., van der Heijden, K. B., Egberts, A. C. G., Korzilius, H. P. L. M., & Smits, M. G. (2010). Dose finding of melatonin for chronic idiopathic childhood sleep onset insomnia: An RCT. Psychopharmacology, 212(3), 379–391.