Night Terrors in Adults: Causes, Triggers, and Treatment

Your partner says you sat straight up at 1 a.m., screamed, and stared right through them. Your heart was pounding and you were soaked in sweat, but you don’t remember any of it. In the morning you just feel wrung out, and a little embarrassed to ask what happened.

What happened has a specific place in the night. Night terrors belong to a group of conditions called disorders of arousal, which a neurology review describes as waking behaviors that erupt abruptly out of non-REM sleep. During an episode the person stays largely unresponsive while brain recordings show sleep-like and wake-like activity at once. Part of the brain is awake enough to scream and bolt while the rest stays deeply asleep, so telling a night terror from a nightmare or a trauma dream takes precision about when it happens and what the sleeper remembers.

The standard guidance treats night terrors mostly as a childhood problem. The MedlinePlus medical encyclopedia, run by the National Library of Medicine, notes they’re most common between ages 3 and 7 and can occur in adults, especially with emotional tension or alcohol use. Its advice is to reduce stress and see a provider if episodes are frequent, disrupt sleep, come with other symptoms, or cause or nearly cause injuries.

That advice is sound as far as it goes, but at Siggy we’d rather trace what’s feeding your episodes than tell you to wait them out. Research on adults points to a short list of triggers, including stress, sleep debt, alcohol near bedtime, and untreated sleep apnea, and sleep clinics treat them in a clear order. This guide separates night terrors from nightmares and PTSD, weighs the evidence on each trigger, and explains when an episode deserves a sleep study.

What This Page Covers

• What a Night Terror Looks Like in an Adult
• Night Terrors vs Nightmares vs PTSD Nightmares
• What Triggers Night Terrors in Adults
• How Stress, Anxiety, and Depression Fit In
• How Night Terrors Are Treated
• When to Get Checked

What a Night Terror Looks Like in an Adult

A night terror usually starts with a sudden scream or cry out of deep sleep. The person may sit up or thrash around looking terrified, with a racing heart, fast breathing, and sweating. MedlinePlus notes that the person may not respond to being talked to, comforted, or woken, and often has no memory of it the next day.

Adult night terrors are less rare than many people assume. In a UK survey of 4,972 people aged 15 and older, 2.2% reported night terrors, with no difference between men and women and lower rates at older ages. The authors note the true rate is likely higher because the figures are self-reported. Night terrors also overlap with sleepwalking: in the London sleep center series described below, nearly a quarter of patients had more than one type of episode.

Night Terrors vs Nightmares vs PTSD Nightmares

From across the bed, all three can look like someone waking in fear. The differences are sleep stage, timing, and memory. Night terrors arise from deep non-REM sleep, typically in the first third of the night when that stage dominates, according to a 2023 systematic review of behavioral treatments. The American Academy of Sleep Medicine (AASM), in its position paper on nightmares, describes nightmare disorder as usually tied to REM sleep, with well-remembered, extremely distressing dreams. MedlinePlus adds that nightmares are more common in the early morning, can follow frightening shows or emotional experiences, and don’t leave the person disoriented.

PTSD complicates the picture. NIMH’s PTSD overview lists recurring dreams related to the traumatic event among PTSD’s re-experiencing symptoms, alongside flashbacks, and lists feeling tense, on guard, or on edge among its arousal symptoms. Trauma nightmares also aren’t confined to REM sleep: an ambulatory sleep study recorded PTSD nightmares arising from both REM and non-REM sleep, which is one reason a trauma survivor’s episodes can resemble night terrors.

Here’s how the three compare at a glance:

Feature	Night Terror	Nightmare	PTSD Nightmare
When It Happens	Deep non-REM sleep, first third of night	Usually REM sleep, often early morning	REM or non-REM sleep
What’s Remembered	Little or nothing	Vivid dream details	Recurring trauma-linked dreams
Often Travels With	Sleep loss, stress, alcohol	Scary shows, emotional days	Flashbacks, feeling on edge
First-Line Help	Sleep, stress, and apnea care	Imagery rehearsal therapy	Imagery rehearsal plus PTSD care

Telling them apart changes the plan. The AASM paper recommends imagery rehearsal therapy for nightmare disorder and PTSD-associated nightmares and doesn’t recommend clonazepam for nightmare disorder, yet clonazepam is commonly the first-line medication for night terrors and related parasomnias. Our guide to treating PTSD nightmares covers imagery rehearsal in detail.

What Triggers Night Terrors in Adults

Sleep researchers sort the causes into three layers, as a London clinic review of 512 adults explains. Predisposing factors are thought to be mostly genetic, and many patients report a family history. Priming factors, such as sleep deprivation, stress, and hypnotic sleep medicines, deepen sleep or make it harder to wake from. Precipitating factors, including noise, a bed partner’s touch, breathing pauses from sleep apnea, and limb movements, set off the partial awakening.

Sleep debt has direct lab evidence behind it. In a sleep deprivation study of 10 adult sleepwalkers, staying awake for 38 hours increased both the number and complexity of episodes in recovery sleep. Sleepwalking and night terrors are closely related, and sleep loss deepens the non-REM sleep both come from.

Stress tops the list of self-reported triggers. In a 2025 survey of 188 adults with sleepwalking, 95% named psychological stress, 78% bad dreams or nightmares, and 60% sleep deprivation, while alcohol and caffeine were named less often.

Alcohol and breathing problems show up in population data. In the UK survey, people who drank alcohol at bedtime, had obstructive sleep apnea, or had nightmares at least monthly were each about four times as likely to report night terrors. A survey can’t prove cause, but sleep apnea deserves attention because it’s treatable: in the London series, 22% of patients had it, and 86% of the 92 who tried CPAP or a mandibular advancement device reported good control.

Medications matter too. The London authors note that sedating sleep medicines and antidepressants can make these episodes worse in some people, even though both are also used to treat them.

How Stress, Anxiety, and Depression Fit In

The link runs both ways. A psychopathology review published in 2025 found mental health conditions more common in people with non-REM parasomnias, and these parasomnias more common in people with mental health conditions, a pattern psychiatric medications didn’t appear to explain.

That doesn’t mean night terrors signal a hidden disorder. The 2023 behavioral review notes that education and reassurance are a common first step, partly to correct the belief that parasomnias point to a lurking psychological problem.

It does mean that if stress, worry, or low mood has been building, treating it may also calm your nights. In the London series, 32 of the 40 patients who tried cognitive behavioral therapy for insomnia or for stress and anxiety, or mindfulness-based stress reduction, reported good control. Our guide to anxiety and insomnia covers racing thoughts at night.

How Night Terrors Are Treated

Sleep clinics usually work in steps. In the London series, everyone first got safety advice and sleep hygiene guidance covering a regular schedule and enough time in bed, and the authors also advise avoiding sleep deprivation, caffeine, and alcohol near bedtime. Next came treatment of other sleep disorders and of stress and anxiety. Medication came last, for episodes that persisted or had no clear trigger.

About a third of patients (32%) reached good control without medication, through sleep hygiene, CPAP or an oral appliance, cognitive or mindfulness therapies, or stopping a medicine that seemed to trigger episodes. Sleep hygiene alone was enough for 13%. When medication was needed, benzodiazepines, almost always low-dose clonazepam, were used most and had the highest success rate. These are patients’ own reports from a retrospective review, so they’re encouraging rather than proof.

Behavioral treatments have a thinner evidence base. The 2023 review of 72 publications found mostly case reports and case series, with some support for multicomponent cognitive behavioral therapy, sleep hygiene, scheduled awakenings, and hypnosis. Scheduled awakening means gently waking the person shortly before episodes usually happen. Our guide to sleep hygiene for mental health covers the habits in more depth.

If you share a bed with someone who has night terrors, stay calm and keep them safe rather than shaking them awake, since people in an episode often can’t respond. It also helps to clear the floor around the bed and lock windows and outside doors.

When to Get Checked

If episodes are occasional and tied to a stressful stretch or short nights, the steps above are a reasonable start. See a clinician if they’re frequent, regularly disrupt sleep, come with other symptoms, or cause or nearly cause injuries.

Ask about a sleep study if you snore, gasp for air, or feel very sleepy during the day, or if episodes look unusual. In a video polysomnography analysis of the same 512 London patients, 28.9% had sleep apnea, periodic limb movements, or both, most often in older, male, sleepy, and heavier patients. The authors note that video sleep testing also helps separate these episodes from epilepsy and REM sleep behavior disorder.

If episodes come with dreams about a past trauma, flashbacks, or feeling constantly on edge, tell your clinician, because PTSD has its own effective treatments, covered in our overview of PTSD. If someone is seriously hurt during an episode, call 911, and if you have thoughts of harming yourself, call or text 988.

Night terrors can feel awkward to describe, even to a doctor.

If you take or start an antidepressant, mention any night terrors or sleepwalking to your prescriber, since these medications can affect them in some people.

Adult night terrors usually have identifiable triggers, and the most useful questions are about your sleep, stress, drinking, and breathing at night. If your nights have been rough for a while, our guide to depression and sleep covers how mood and sleep feed each other.

Ready to take control of your mental health? Start your anonymous intake with Siggy and get your plan reviewed by a licensed prescriber.

This article is for education only and isn’t a substitute for personal medical or mental health advice. It was reviewed for clinical accuracy and reflects sources available as of September 2026. Talk with your own clinician about any sleep symptoms that concern you.