Why You Can’t Sleep After Trauma (And How to Calm Your Nervous System)
Quick Answer: Why you can’t sleep after trauma
After trauma, the brain and nervous system can remain in a heightened state of alert, making it difficult to fall asleep or stay asleep. For some people, ongoing sleep problems are connected to trauma-related hyperarousal, nightmares, anxiety, or a nervous system that remains unusually responsive to possible threat.
FROM THE DESK OF DR. CURTIS
Quick check:
If you’ve been:
waking between 2–4 a.m.
feeling alert at night despite exhaustion
having trouble falling asleep or staying asleep
replaying thoughts or feeling “on edge” in bed
This article may help explain why.
In 15 years of clinical practice, one of the most common things I hear is:
“I don’t know why I can’t sleep. I’m not stressed right now. Nothing bad is happening.”
What can be confusing is that the stressful or traumatic event may be over while the brain and body continue responding to reminders, sensations, thoughts, or nighttime vulnerability as though greater vigilance is still necessary.
Unresolved trauma can contribute to hyperarousal, making it difficult for the nervous system to settle enough for restful sleep.
This article is for people who have tried to improve their sleep and are still exhausted. You deserve an explanation, and you deserve more than another sleep tip.
Sometimes insomnia is only one piece of a larger picture involving trauma, PTSD, anxiety, chronic stress, and nervous system arousal.
You may have tried all the usual advice.
No screens before bed. Magnesium. Melatonin. A cold, dark bedroom. Chamomile tea. White noise. Sleep apps. Wind-down routines.
And you are still staring at the ceiling at 3:00 a.m. Or you fall asleep only to wake again at 2:00, 3:00, or 4:00 a.m. Or nightmares and restless sleep leave you more exhausted than when you went to bed.
When this keeps happening, it may be more than a sleep-hygiene problem. Understanding what is keeping you from sleeping and what is maintaining the problem is an important first step toward determining the right treatment.
Understanding Is the First Step. Restful Sleep Is the Next.
Learning how trauma affects sleep can bring tremendous relief. Many people finally understand why they continue lying awake at night, waking between 2 and 4 a.m., feeling exhausted despite spending hours in bed, or why they can't seem to shut their brain off.
Understanding what is happening is important.
Learning how to regulate your nervous system is often the next step.
For some, chronic insomnia itself needs to be addressed directly. For others, PTSD, unresolved trauma, anxiety, nightmares, or nighttime hyperarousal may also be contributing to the sleep disturbance.
When insomnia and trauma are occurring together, treatment may need to address both the sleep problem and the trauma symptoms, rather than assuming that treating one will automatically resolve the other.
If you've tried improving your sleep habits and still wake feeling exhausted, there may be more happening beneath the surface than sleep alone.
Read: How to Calm Your Nervous System
Learn About EMDR Intensive Therapy
Learn More about Sleep and Trauma
The Myth We Need to Bust Right Now
You have probably heard that better sleep habits will fix this. Consistent bedtime. No caffeine after noon. Screens off an hour before bed.
That advice is not wrong for people whose sleep problems are primarily behavioral or environmental. But if your sleep disruption is rooted in trauma-related hyperarousal or unprocessed threat responses, sleep hygiene alone is often not enough. Reviews of PTSD and sleep show that trauma-related sleep problems are maintained by deeper neurobiological and psychological processes than habits alone can address (Lancel et al., 2021).
If the problem lives in the nervous system, better habits may improve the environment without resolving what is driving the alarm.
Learn More About Trauma Recovery
People experiencing trauma-related sleep problems also find these articles helpful:
• How Trauma Changes the Brain
• How to Calm Your Nervous System
You Are Not Alone: And This Is Not a Character Flaw
One of the hardest parts of chronic sleep disruption is how isolating it can feel, as if everyone else is resting while you lie awake alone wondering why you can't sleep.
Decades of research show that sleep disturbance is closely associated with trauma and PTSD. Reviews consistently identify insomnia, nightmares, fragmented sleep, and disrupted sleep architecture as prominent features of trauma-related disorders (Koffel et al., 2016). Sleep problems can also persist and may require clinical attention in their own right rather than being viewed only as a secondary symptom of PTSD (Lancel et al., 2021).
Broader reviews have similarly found high rates of insomnia, nightmares, and other sleep disturbances among trauma-affected populations (Lancel et al., 2021). Population and epidemiological studies have also documented strong associations between trauma exposure, PTSD and psychiatric symptoms, insomnia, nightmares, and persistent sleep disturbance (Ohayon & Shapiro, 2000; Maher et al., 2006).
If you continue having trouble falling asleep or staying asleep after trauma, the problem may involve more than your bedtime habits. Sleep hygiene alone is not designed to address trauma symptoms, hyperarousal, nightmares, or other factors that may be maintaining the sleep disturbance.
What’s Actually Happening in Your Brain at 3 AM
Sleep is not just rest. Sleep plays an important role in emotional regulation, memory, learning, and recovery, and REM sleep has been studied for its role in emotional memory processing (Walker & van der Helm, 2009).
Research suggests that sleep disturbance is not only a symptom of PTSD but can also contribute to the development and persistence of trauma symptoms (Lancel et al., 2021).
When trauma enters the picture, that process can become disrupted.
Reviews suggest that sleep disturbance is not merely a symptom of PTSD. It can also be a predisposing, precipitating, and perpetuating factor, meaning that disturbed sleep may increase vulnerability to PTSD, worsen its course, and make recovery harder (Lancel et al., 2021).
Trauma can leave your brain and body unusually alert at night. Nightmares, racing thoughts, intrusive memories, or feeling like you need to stay aware of what is happening around you can make it hard to settle into deep, restful sleep.
This can become a difficult cycle: trauma disrupts sleep, and poor sleep can make it harder to manage emotions, stress, and trauma symptoms the next day.
If you'd like to understand how trauma affects the nervous system more deeply, you may also find our article How Trauma Changes the Nervous System helpful.
Why Trauma Causes Insomnia
Sleep problems after trauma are extremely common. Insomnia is one of the most frequently reported sleep problems among people who have experienced trauma and PTSD (Lancel et al., 2021; Koffel et al., 2016).
You can be completely exhausted and still feel strangely awake the moment you get into bed. Your body is tired, but your mind starts racing. You notice every sound. You replay conversations or memories. You finally fall asleep and then wake again a few hours later. A nightmare wakes you up, and suddenly you are wide awake.
Trauma can leave the brain and body more alert to possible danger, even long after the original experience has ended. At night, when the distractions of the day disappear and everything becomes quiet, that heightened alertness can make it difficult to settle into sleep and stay asleep.
This can show up as trouble falling asleep, waking throughout the night, nightmares, light or restless sleep, or waking too early and being unable to fall back asleep.
The frustrating part is that you may know you need sleep. You may desperately want to sleep. Being exhausted and being able to sleep are not always the same thing.
When trauma, PTSD, anxiety, or chronic stress is affecting sleep, the problem may go deeper than bedtime habits. You can be doing everything you know to do to sleep better and still find yourself wide awake, exhausted, and frustrated that nothing seems to work.
Why Melatonin, Sleep Hygiene, and Trying Harder May Not Be Enough
When you can't sleep, you start trying things.
Melatonin. No caffeine after noon. A cooler bedroom. No phone before bed. Meditation. Magnesium. Going to bed earlier. Going to bed later. Trying to clear your mind.
And after enough sleepless nights, you may start wondering:
Why isn't any of this working?
The answer depends on what is actually keeping you awake.
Melatonin
Melatonin helps regulate the body's sleep-wake cycle. But it does not directly treat PTSD, trauma-related nightmares, hyperarousal, or the thoughts and reactions that may be interfering with sleep.
Medication is another common approach to sleep problems, but the research is more complicated than simply finding something that makes you sleepy. A 2024 analysis of 99 randomized controlled trials involving more than 10,000 participants found that prazosin showed the strongest evidence among the medications studied for PTSD-related insomnia, nightmares, and poor sleep quality. Evidence for several other commonly used medications was limited (Lappas et al., 2024).
If the problem is more complicated than your body's sleep timing, melatonin may not address everything that is keeping you awake.
Sleep Hygiene
A regular sleep schedule, a comfortable bedroom, limiting caffeine, and reducing stimulating activities before bed can all support healthy sleep.
But sleep hygiene is not the same thing as treatment for chronic insomnia.
And when nightmares, PTSD symptoms, anxiety, intrusive memories, or feeling unusually alert at night are interfering with sleep, changing your bedtime routine may not address the entire problem. Research on PTSD and sleep supports the need to assess and treat persistent sleep disturbance rather than viewing it only as a matter of sleep habits (Lancel et al., 2021).
Trying Harder to Sleep
This is one of the cruelest parts of insomnia.
The harder you try to make yourself sleep, the more awake you can become.
You check the clock. You calculate how many hours are left before morning. You worry about how you are going to function tomorrow. You tell yourself, “I have to sleep now.”
Now you're not just awake. You're awake and worried about being awake.
That frustration and effort can increase arousal, making sleep even harder.
Strategies that reduce physiological arousal may also be useful as part of a broader treatment plan. In one study of adults with insomnia, paced breathing was associated with increased vagal activity and improved sleep quality (Tsai et al., 2015).
You cannot force yourself to sleep. The goal of treatment is to understand what is keeping you awake and address the factors that are keeping the cycle going.
What About CBT-I?
Cognitive Behavioral Therapy for Insomnia (CBT-I) is considered a first-line psychological treatment for chronic insomnia and has one of the strongest evidence bases in sleep medicine (Walker et al., 2022). Randomized controlled trials show CBT-I can significantly improve sleep quality in individuals with PTSD and related trauma symptoms (Talbot et al., 2014).
Meta-analytic research examining CBT-I components suggests techniques such as sleep restriction and stimulus control are among the most effective elements of insomnia treatment (Steinmetz et al., 2024). CBT-I has also been shown to be effective across a range of psychiatric populations, including individuals experiencing trauma-related distress (Taylor & Pruiksma, 2014).
But there is an important distinction.
CBT-I treats the patterns that keep chronic insomnia going. EMDR Therapy treats PTSD and unresolved traumatic experiences that can be contributing to nightmares, anxiety, intrusive memories, physical reactions, and feeling unusually alert at night.
When insomnia and trauma are happening together, treatment does not necessarily have to choose between the two.
Research suggests that sleep problems can persist even when PTSD symptoms improve, which is one reason insomnia may need to be addressed directly as part of trauma treatment rather than simply waiting for sleep to get better on its own (Lancel et al., 2021).
When Sleep Problems and Trauma Are Happening Together
Maybe you recognize both sides of this.
You're exhausted. You have trouble falling asleep or staying asleep. You wake throughout the night. You've tried changing your sleep habits, but you're still not sleeping well.
And there is something else happening too.
Nightmares. Anxiety when everything gets quiet. Memories that show up when you don't want them. A body that suddenly feels alert when you're trying to rest. Or the sense that you can never completely let your guard down.
When chronic insomnia and trauma symptoms are happening together, both deserve attention.
Research has found that insomnia can persist even after PTSD treatment, while treating insomnia directly can improve sleep in people who also have PTSD (Talbot et al., 2014; Lancel et al., 2021).
At Trauma Recovery Institute, significant insomnia is considered as part of trauma treatment rather than assuming sleep will automatically improve once trauma processing begins. When clinically appropriate, brief CBT-I strategies may be incorporated early in an EMDR intensive to address insomnia before moving into trauma processing.
EMDR Therapy can then address traumatic experiences and the memories, beliefs, emotions, and physical reactions that continue to cause distress.
The treatment plan is based on what you are actually experiencing, not on forcing every sleep problem into a trauma explanation.
Learn more about Insomnia & Trauma Therapy in Alaska →
Can Treating Trauma Help You Sleep Better?
This is where the research becomes encouraging.
A 2025 systematic review and meta-analysis examined treatments for people experiencing PTSD alongside sleep problems. The researchers found that active treatment can improve PTSD symptoms and sleep-related outcomes, although the results differed depending on the treatment and sleep outcome being measured (Zhao et al., 2025).
There is also an important caution in the research: improving PTSD does not always mean that insomnia goes away. Sleep disturbance can persist after trauma symptoms improve, and chronic insomnia can develop patterns that continue to interfere with sleep even when the original trauma symptoms are getting better (Lancel et al., 2021).
That is why I do not approach significant insomnia as something we simply wait to see improve during trauma treatment.
At Trauma Recovery Institute, when a chronic sleep problem is part of the clinical picture, brief CBT-I strategies can be incorporated early in an EMDR intensive to begin addressing the sleep problem before moving into trauma processing. EMDR Therapy can then address the traumatic memories and the negative beliefs, emotions, and physical reactions connected to those experiences.
This matters when you are dealing with both sides of the problem. You may need help getting out of the exhausting cycle that has developed around sleep, while also treating the experiences that continue to bring anxiety, nightmares, intrusive memories, or a sense of being on alert when you should finally be able to rest.
The evidence for EMDR in treating PTSD is well established, while CBT-I has the stronger evidence base for treating chronic insomnia itself. That distinction is important. The goal is not to make one treatment do everything. It is to identify what is interfering with your sleep and recovery and address each part appropriately.
What Consecutive Days Offer That Weekly Therapy Doesn't
Weekly therapy can be excellent care. But there is a practical reality to working on trauma one hour at a time.
You come in. You open something. You go home. Then there are six or seven nights before you return.
By the next appointment, a week of work, family, stress, poor sleep, and everyday life has happened in between. Part of the session may be spent reconnecting with where you left off before you can continue the work.
EMDR Intensive Therapy uses the same EMDR treatment approach but concentrates treatment into longer sessions over several consecutive days.
That gives us more uninterrupted time for assessment, preparation, trauma processing, stabilization, and integration without waiting another week to continue.
When you're already exhausted from not sleeping and struggling with trauma symptoms, the idea of spending months fitting treatment into weekly appointments may not be what you want. An intensive offers another option: set aside focused time, do the work, and continue it the next day.
That does not make weekly therapy ineffective. It makes the structure different.
Learn More About EMDR Intensive Therapy →
Why Some People Travel to Alaska for EMDR Intensive Therapy
You do not necessarily need to find the closest trauma therapist.
When you're looking for specialized treatment, the treatment approach and clinician may matter more than proximity.
Clients can travel to Fairbanks from elsewhere in Alaska or outside the state for focused EMDR Intensive Therapy over several consecutive days.
Instead of traveling back and forth for weekly appointments, the intensive format allows treatment to be concentrated into one visit.
For someone who has been struggling for months or years, setting aside several days specifically for treatment can provide a very different experience from trying to fit trauma therapy into the rest of an already demanding life.
Learn More About Destination EMDR Intensive Therapy →
Schedule an Intensive Therapy Consultation
You Have Been Tired Long Enough
If you're having ongoing trouble falling asleep, staying asleep, waking throughout the night, or waking exhausted despite spending hours in bed, you may be dealing with chronic insomnia or another sleep problem that deserves attention.
And if PTSD, trauma, nightmares, anxiety, or feeling constantly on alert are happening alongside the sleep problems, both the sleep disturbance and the trauma symptoms deserve to be taken seriously.
You may have already tried changing your bedtime routine, taking melatonin, shutting off screens, exercising more, meditating, or simply trying harder to sleep.
And you are still tired.
At Trauma Recovery Institute, the goal is to understand what is interfering with your sleep and what else is happening alongside it. When significant insomnia and trauma symptoms occur together, treatment can address the insomnia directly while also treating unresolved trauma when appropriate.
A consultation is simply a relaxed conversation. There is no pressure and no obligation. We'll talk about what you've been experiencing, what you've already tried, and whether treatment at Trauma Recovery Institute appears to be a good fit.
You do not have to wait until you're falling apart to get help.
You have been tired long enough.
👉 Learn More About EMDR Intensive Therapy
Or, if you're not ready for that step, start with the Free Trauma & Sleep Guide.
Continue Learning
You might also find these helpful:
Understanding Trauma
• What Trauma Does to the Brain
• How to Calm Your Nervous System
• Insomnia and Treatment Options
Understanding Treatment Options
• EMDR Intensive Therapy vs Weekly Therapy
Ready to Take the Next Step?
A Note on Winter, Darkness, and Sleep
Northern regions, including Alaska, experience long periods of winter darkness that can affect the body's circadian rhythm, the internal clock that helps regulate when you feel awake and when you feel sleepy.
If You Serve, Protect, or Care for Others: This Is Especially for You
Veterans and Active Military
Hypervigilance, light sleep, instant wakefulness, and nightmares can make sense in operational settings. The problem is that the nervous system does not always receive a clear signal that the danger has ended.
Sleep disturbance is highly prevalent in trauma-exposed populations, including military and veteran communities (Lancel et al., 2021).
First Responders
Repeated exposure to critical incidents, shift work, unpredictable schedules, and the need to remain alert under pressure can take a toll on sleep. You may be exhausted when your shift ends but find that your brain and body do not immediately switch off simply because you're finally home.
When sleep problems occur alongside nightmares, intrusive memories, anxiety, irritability, or feeling constantly on guard, trauma exposure may be part of what needs attention.
Healthcare Workers
Caring for people through emergencies, suffering, death, and other high-stress situations can follow you home long after a shift has ended.
You may finally have the opportunity to sleep and discover that your mind is replaying the day, your body still feels keyed up, or you are too exhausted to understand why you are still awake.
When chronic sleep problems occur alongside trauma, moral injury, compassion fatigue, anxiety, or chronic stress, it is worth looking at the whole picture rather than treating exhaustion as something you simply need to push through.
If you spend your life caring for others, you still deserve care yourself.
Frequently Asked Questions
Why does trauma affect sleep?
After trauma, the brain and body can remain unusually alert even when it is time to rest. This heightened state of alert, often called hyperarousal, can make it harder to fall asleep, stay asleep, or settle back to sleep after waking. Nightmares, anxiety, intrusive thoughts, and sensitivity to sounds or movement can also interfere with restful sleep (Lancel et al., 2021).
Can EMDR therapy help with sleep problems?
EMDR Therapy is an evidence-based treatment for PTSD, and sleep problems such as insomnia and nightmares are common among people with PTSD. Treating PTSD may also lead to improvements in sleep, although sleep problems can persist even when other PTSD symptoms improve.
EMDR may be appropriate when nightmares, intrusive memories, anxiety, physical reactions, or feeling constantly on alert are connected to traumatic experiences. When chronic insomnia is also present, the insomnia may need to be treated directly rather than relying on trauma treatment alone to improve sleep.
At Trauma Recovery Institute, significant insomnia can be addressed with brief CBT-I strategies early in an EMDR intensive, followed by trauma processing when clinically appropriate.
Is insomnia always caused by trauma?
No. Insomnia can have many causes, including stress, anxiety, depression, medical conditions, medications, changes in schedule, sleep habits, and other sleep disorders.
Trauma becomes especially important to consider when trouble sleeping occurs alongside symptoms such as nightmares, intrusive memories, anxiety, feeling constantly on alert, or strong emotional or physical reactions to reminders of what happened.
A careful assessment can help determine what may be contributing to the sleep problem and what type of treatment makes sense.
Why does trauma cause insomnia?
Trauma can leave the brain and body unusually alert to possible danger. That can make it difficult to switch from being watchful and prepared during the day to settling into sleep at night.
You may be exhausted all day and then suddenly feel wide awake when your head hits the pillow. Your mind starts racing. You notice every sound. You wake from a nightmare and can't get back to sleep. Or you wake in the middle of the night with no obvious reason and find yourself completely alert.
Over time, chronic insomnia can also develop patterns of its own. Worrying about sleep, spending long periods awake in bed, checking the clock, changing your schedule, and trying harder to make yourself sleep can unintentionally keep the cycle going.
That is why treatment may need to address both the sleep problem itself and trauma symptoms that are interfering with sleep.
Who I Help
I work with adults experiencing trauma, PTSD, chronic stress, and sleep problems, with extensive experience serving people in high-stress professions, including:
military service members and veterans
first responders, including firefighters, law enforcement, and EMS
healthcare professionals experiencing burnout or compassion fatigue
high-stress professionals managing trauma exposure, chronic stress, or performance pressure
Services include EMDR therapy, EMDR intensive therapy, and Elite Mental Toughness® training designed to support trauma recovery and psychological resilience.
About Dr. Yvette Curtis
Dr. Yvette Curtis, PsyD, LPC, MAC is a licensed professional counselor, Doctor of Psychology, EMDRIA Approved Consultant, and Master Addiction Counselor with over 15 years of clinical experience treating complex trauma in military, Indigenous, and diverse populations. She specializes in EMDR intensives for PTSD, complex trauma, and treatment-resistant presentations, and has provided EMDR therapy since 2011. Dr. Curtis regularly writes about trauma recovery, EMDR therapy, and psychological resilience for military personnel, first responders, healthcare professionals, and other high-stress professionals.
Referrals and article shares are always welcome.
References
References include peer-reviewed reviews, randomized controlled trials, and meta-analyses selected to support the educational information presented in this article.
Koffel, E., Khawaja, I. S., & Germain, A. (2016). Sleep disturbances in posttraumatic stress disorder: Updated review and implications for treatment. Psychiatric Annals, 46(3), 173–176.
Lancel, M., van Marle, H. J. F., Van Veen, M. M., & van Schagen, A. M. (2021). Disturbed sleep in PTSD: Thinking beyond nightmares. Frontiers in Psychiatry, 12, 767760.
Lappas, A. S., Glarou, E., Polyzopoulou, Z. A., Goss, G., Huhn, M., Samara, M. T., & Christodoulou, N. G. (2024). Pharmacotherapy for sleep disturbances in post-traumatic stress disorder (PTSD): A network meta-analysis. Sleep Medicine, 119, 467–479.
Maher, M.J., Rego, S.A., & Asnis, G.M. (2006). Sleep disturbances in patients with post-traumatic stress disorder: epidemiology, impact and approaches to management. CNS Drugs. 20(7):567-590.
Ohayon, M.M., & Shapiro, C.M. (2000). Sleep disturbances and psychiatric disorders associated with posttraumatic stress disorder in the general population. Compr Psychiatry. 41(6):469-478.
Steinmetz, L., Simon, L., Feige, B., Riemann, D., Johann, A. F., Ell, J., Ebert, D. D., Baumeister, H., Benz, F., & Spiegelhalder, K. (2024). Network meta-analysis examining efficacy of components of cognitive behavioural therapy for insomnia. Clinical Psychology Review, 114, 102507.
Talbot, L. S., Maguen S., Metzler, T. J., Schmitz, M., McCaslin, S.E., Richards, A., Perlis, M.L., Posner, D.A., Weiss, B., Ruoff, L., Varbel, J., Neylan, T.C. (2014). Cognitive behavioral therapy for insomnia in posttraumatic stress disorder: a randomized controlled trial. Sleep. 37(2):327-341.
Taylor, D. J., & Pruiksma, K. E. (2014). Cognitive and behavioural therapy for insomnia (CBT-I) in psychiatric populations: A systematic review. International Review of Psychiatry, 26(2), 205–213.
Tsai HJ, Kuo TB, Lee GS, & Yang CC. Efficacy of paced breathing for insomnia: enhances vagal activity and improves sleep quality. Psychophysiology. 2015 Mar;52(3):388-396.
Walker, J., Muench, A., Perlis, M. L., & Vargas, I. (2022). Cognitive behavioral therapy for insomnia (CBT-I): A primer. Clinical Psychology and Special Education, 11(2), 123–137.
Walker, M. P., & van der Helm, E. (2009). Overnight therapy? The role of sleep in emotional brain processing. Psychological bulletin, 135(5), 731–748.
Zhao, Y.-F., Huang, C.-Y., Zhang, Z.-X., Liu, R.-B., Liu, J.-L., Li, X.-Z., Guo, G.-L., & Zhang, C. (2025). Psychotherapeutic, pharmacological and other active interventions from the NICE guideline for post-traumatic stress disorder with sleep disorder: Systematic review and meta-analysis. BMC Psychiatry, 25, 699.
Photo by terovesalainen
Disclaimer
This article is for educational purposes only and does not constitute psychotherapy, diagnosis, or treatment. Reading this content does not create a therapeutic relationship with Dr. Yvette Curtis or Trauma Recovery Institute. Dr. Yvette Curtis provides psychotherapy services to individuals located in Alaska. Individuals outside Alaska may participate in educational services or destination intensive therapy where legally appropriate. If you are experiencing thoughts of suicide or self-harm, contact the 988 Suicide & Crisis Lifeline or seek emergency medical assistance.
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