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Obsessive-compulsive disorder (OCD) is not only about repeated thoughts or ritualistic actions—it also steals away restful sleep. Many people with OCD struggle to fall asleep, stay asleep, or wake feeling unrefreshed. This problem is more common than most realize. In fact, studies show that up to 70–80% of patients with OCD experience significant insomnia or poor sleep quality, much higher than in the general population.
Why does this matter? Sleep is the body’s natural reset button. Without it, your ability to focus, regulate emotions, and cope with stress weakens. For someone already battling OCD, the lack of quality sleep can create a heavy burden. Could poor sleep be making OCD worse—or is OCD the thief keeping people awake? Researchers are uncovering how closely these two problems are linked, and the findings are both surprising and alarming.
The Hidden Link Between OCD and Sleep
The relationship between OCD and sleep goes beyond simple tiredness. People with OCD often face longer times falling asleep, frequent awakenings, and even delayed sleep schedules. Research shows that delayed sleep phase disorder, where people naturally fall asleep very late and wake up late, appears more often in OCD patients than in the general population.
Another surprising link comes from mood and anxiety. Poor sleep in OCD is not always explained by compulsions alone—it is strongly tied to symptoms of depression and trait anxiety. In fact, studies suggest these emotional factors play a central role in worsening sleep problems for people with OCD . This means that treating OCD without addressing mood and anxiety may leave sleep issues unresolved.
So, what does this tell us? The connection between OCD and sleep is not one-way. Disturbed sleep can fuel obsessive thoughts, while the stress of OCD can make restful sleep nearly impossible. This bidirectional relationship creates a cycle that can be difficult to break.
Why Sleep Matters in OCD
Sleep is more than rest—it is fuel for the brain. Without it, people with OCD may lose the ability to focus, regulate emotions, and control impulses. Poor sleep can lower cognitive control, making obsessions stronger and compulsions harder to resist. A published article explained that sleep disturbance may act as a mechanistic factor that worsens OCD by weakening attention and inhibitory control.
Even when OCD symptoms improve with therapy, unresolved sleep problems may linger. This lingering insomnia increases the risk of relapse and can reduce overall quality of life. Reports show that patients who continue to experience insomnia often feel more fatigue and emotional strain, even after OCD treatment has helped their rituals and fears .
So why does sleep matter so much in OCD? Because restful nights do more than restore energy—they may determine whether treatment gains last or fade away.
What Science Reveals
When scientists examined sleep in OCD, the results were eye-opening. In one randomized trial, 81% of OCD patients reported insomnia before treatment began. Yet even after therapy, many continued to struggle with poor sleep quality. This shows that standard OCD treatments often ease obsessions and compulsions but leave sleep issues only partly improved.
The picture becomes clearer when looking at younger patients. In adolescents, those with more severe insomnia at the start of therapy were less likely to reach remission, even if their OCD symptoms improved overall according to study . This suggests that sleep disturbance can quietly shape how effective treatment turns out to be.
Sleep problems are not unique to OCD alone. Adults with hoarding disorder also show poor sleep and greater insomnia severity, though delayed sleep phase appears more specific to OCD according to experts . These findings remind us that sleep disruption is widespread across related conditions, but OCD may carry a unique burden tied to circadian rhythms.
The Shocking Truth
The scale of sleep problems in OCD is hard to ignore. Across multiple findings, as many as 70% of patients report insomnia, while some studies place the number even higher (Segalàs et al., 2021). Despite these alarming rates, insomnia often remains in the background, overshadowed by the more visible rituals and intrusive thoughts.
What is even more troubling is that sleep does not always bounce back when OCD improves. For many, the nightmares of checking, counting, or cleaning may fade, yet the nights remain restless. Experts warn this mismatch could explain why some people relapse or continue to feel drained despite progress in therapy.
Here are the shocking facts:
- Up to 70–80% of OCD patients suffer from insomnia or disrupted sleep.
- Sleep problems can persist even after obsessions and compulsions improve.
- Insomnia may increase the risk of relapse and ongoing fatigue.
- Standard OCD treatments rarely address sleep directly.
The truth is simple: OCD doesn’t just rob peace of mind during the day—it also steals recovery at night.
What You Can Do
The good news is that sleep problems in OCD are not impossible to manage. While OCD treatments like exposure and response prevention (ERP) reduce obsessions and compulsions, sleep may require its own strategies. Reports highlight that patients benefit when insomnia is targeted alongside OCD treatment.
Here are steps supported by research and clinical findings:
- Ask for sleep assessments during OCD treatment to ensure insomnia is not overlooked.
- Consider CBT for insomnia (CBT-i), which is proven to improve sleep in mental health conditions.
- Explore circadian rhythm tools such as melatonin or light therapy if you notice a delayed sleep phase.
- Treat underlying depression and anxiety, since these often drive poor sleep quality in OCD patients.
- Look for integrated care, where OCD and sleep are treated together rather than separately.
Taking these steps can break the cycle of restless nights and obsessive days, allowing recovery to feel more complete.
Wrap Up
Sleep and OCD are tightly connected, and ignoring one can weaken progress in the other. Studies reveal that even when obsessions and compulsions fade, many people still face restless nights that raise the risk of relapse.
This means recovery depends on more than just easing OCD symptoms—it also requires tackling sleep problems head-on. If you live with OCD, could improving your sleep be the missing step toward real relief? By addressing both together, you give your mind the best chance to heal and your life the chance to fully reset.
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References
- Cox, R. C., Jessup, S., & Olatunji, B. O. (2018). Sleep disturbance in obsessive-compulsive disorder: Preliminary evidence for a mechanistic relationship. Current Sleep Medicine Reports, 4(2), 89–93. Retrieved from: https://doi.org/10.1007/s40675-018-0109-4.
- Hagen, K., Nordahl, H., Launes, G., Kvale, G., Öst, L.-G., Hystad, S., Hansen, B., & Solem, S. (2021). Does concentrated exposure treatment for obsessive-compulsive disorder improve insomnia symptoms? Results from a randomized controlled trial. Frontiers in Psychiatry, 12, 625631. Retrieved from: https://doi.org/10.3389/fpsyt.2021.625631.
- Landrø, N. E. H., Pryser, S. H., Hagen, K., Hansen, B., Kvale, G., & Solem, S. (2024). Effect of concentrated exposure and response prevention on symptoms of insomnia. Journal of Obsessive-Compulsive and Related Disorders, 42, 100891. Retrieved from: https://doi.org/10.1016/j.jocrd.2024.100891.
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- Segalàs, C., Labad, J., Salvat-Pujol, N., Real, E., Alonso, P., Bertolín, S., Jiménez-Murcia, S., Soriano-Mas, C., Monasterio, C., Menchón, J. M., & Soria, V. (2021). Sleep disturbances in obsessive-compulsive disorder: Influence of depression symptoms and trait anxiety. BMC Psychiatry, 21(42), 1–10. Retrieved from: https://doi.org/10.1186/s12888-021-03038-z.
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