Perimenopause nightmares and vivid dreams: what's behind them

Many women describe more vivid dreams or nightmares in perimenopause, but the honest answer is that almost no research has looked at whether the transition itself causes them. The more likely explanations are indirect: sleep that breaks more often, so you remember more of your dreams; stress, anxiety or low mood; alcohol; and medications started in midlife. Frequent nightmares are treatable, and the therapy with the best support, imagery rehearsal therapy, takes only a few minutes a day.

What counts as a nightmare

MedlinePlus defines a nightmare as a bad dream that brings out strong feelings of fear, terror, distress or anxiety. An occasional nightmare is a normal part of life, especially during stressful periods. Nightmare disorder is different: nightmares come often, are distressing, and affect sleep or daytime life. The American Academy of Sleep Medicine (AASM) estimates that it affects about 4% of adults, either on its own or as part of another condition such as post-traumatic stress disorder (PTSD).

Vivid dreams are not the same as nightmares. Remembering long, detailed or strange dreams is not a disorder, although it can be a sign that your sleep is more broken than it used to be.

Is there a link with perimenopause?

The direct evidence is thin. A Swedish questionnaire study of 3,669 women aged 40 to 64 found that 10.4% had nightmares at least once a week. Women with frequent nightmares were more likely to report an irregular heartbeat and chest pain, but the study was not designed to show that menopause causes nightmares. No trial has tested whether treating perimenopause symptoms reduces nightmares.

What research does support is a set of indirect routes, each of which is common in midlife.

Broken sleep means more remembered dreams

The National Heart, Lung, and Blood Institute (NHLBI) explains that dreaming usually happens in REM sleep and that most REM sleep comes later in the night. Sleep runs in cycles of 80 to 100 minutes, and you may wake briefly between them. One leading theory of dream recall holds that you need to wake during the night for a dream to be stored in memory. In a sleep lab study, people who often remembered their dreams spent more time awake after falling asleep and woke more often than people who rarely remembered them.

So if perimenopause has made your sleep lighter in the early morning hours, as described in why perimenopause wakes you at 3 AM, you may not be dreaming more. You may simply be waking up in the middle of dreams more often.

Night sweats: less direct than they seem

It is tempting to blame night sweats, but a sleep lab study of postmenopausal women found that hot flashes caused most of their awakenings in the first half of the night, while REM sleep appeared to suppress hot flashes in the second half. That suggests night sweats are more likely to break up your sleep than to interrupt dreams directly. Their effect on dreams is probably through more frequent waking overall. See night sweats for treatment options.

Stress, anxiety and low mood

MedlinePlus lists major life events, the loss of a loved one, and increased stress at home or work as common triggers of nightmares, and names anxiety disorders and depression among the causes of repeated nightmares. All of these can rise in midlife. If worry or dread is also waking you, read about anxiety at night in perimenopause.

Alcohol

MedlinePlus lists both drinking too much alcohol and abruptly stopping alcohol as triggers for nightmares. See alcohol in perimenopause.

Medications and other causes

Many medicines can change dreaming. The table summarizes the main ones; never stop a prescribed medicine on your own because of nightmares, and ask the prescriber instead.

Possible cause	What the evidence shows
SSRI and SNRI antidepressants	A systematic review found that starting, and even more so stopping, these drugs seems to intensify dreaming, and nightmares are possible
Stopping older antidepressants	Withdrawal from tricyclic antidepressants and some MAO inhibitors may cause nightmares
Beta blockers	A review found a low rate of nervous system side effects, including vivid dreaming, nightmares and sleep disturbance
Stopping sleeping pills or opioid pain medicines	MedlinePlus lists this as a trigger
Over-the-counter sleep aids	MedlinePlus lists these as a trigger
Alcohol, or suddenly stopping it	MedlinePlus lists both as triggers
Sleep apnea	MedlinePlus lists it among causes of repeated nightmares
Fever or eating just before bed	MedlinePlus lists both as triggers

Sleep apnea is worth ruling out if repeated nightmares come with other signs. If you also snore, wake unrefreshed or have morning headaches, see sleep apnea in women after 40.

Trauma and PTSD

Nightmares that replay a frightening or traumatic event are different from ordinary bad dreams. The National Institute of Mental Health (NIMH) lists recurring dreams related to the event among the re-experiencing symptoms of PTSD, along with flashbacks with a racing heart or sweating, and distressing thoughts. To be diagnosed with PTSD, symptoms must last more than a month and include avoidance, feeling on edge, and changes in mood or thinking. NIMH notes that symptoms usually begin within 3 months of the event but sometimes emerge later, and that the main treatments are psychotherapy, medication or both.

What helps

Imagery rehearsal therapy

The AASM recommends imagery rehearsal therapy (IRT) for both nightmare disorder and PTSD-related nightmares. It is the only treatment the AASM gives its “recommended” rating for both. In IRT, you:

1. Choose a recurring nightmare and write it down.
2. Change the story in any way you like, so it becomes less distressing.
3. Rehearse the new version in your mind for a few minutes each day while awake.

IRT is usually taught by a therapist trained in behavioral sleep medicine or trauma care.

Other therapies and medications

The AASM says several other approaches may be used for nightmare disorder, including cognitive behavioral therapy, progressive muscle relaxation, exposure-based therapies, hypnosis and lucid dreaming therapy. Among medications, prazosin may be used, while clonazepam and venlafaxine are not recommended for nightmare disorder. Medication is a decision to make with a clinician who knows your health.

Everyday steps

MedlinePlus suggests regular aerobic exercise, limiting caffeine and alcohol, relaxation techniques such as guided imagery or yoga, and keeping regular bed and wake times. If night sweats or insomnia are breaking your sleep, treating them can reduce how often you wake mid-dream; our guide to CBT-I for menopause insomnia covers the most effective insomnia treatment.

After a nightmare

Waking from a nightmare often leaves your heart racing and your body on alert. A few simple steps can help you settle:

• Sit up, turn on a low light and remind yourself where you are and that it was a dream.
• Breathe slowly, with a longer out-breath than in-breath, until your body calms.
• If you are wide awake and upset, get up and do something quiet in another room, then go back to bed when you feel sleepy. Lying in bed replaying the dream tends to keep you awake.
• Avoid using alcohol to get back to sleep, since it is itself a nightmare trigger.

A sleep diary that notes nightmares, alcohol, new medicines and night sweats can show what tends to come before a bad night.

When to see a clinician

MedlinePlus advises talking to a clinician if you have nightmares more than once a week, if they stop you from getting a good night’s rest or keeping up with daily life, or if they started soon after a new medicine. Also seek help if nightmares relate to a traumatic event, or if you shout, kick or move in your sleep as though acting out a dream. NHLBI notes that muscles normally go limp during REM sleep to prevent this.

A sleep medicine specialist can look for sleep apnea and other sleep disorders and arrange IRT or CBT-I. If nightmares come with thoughts of harming yourself, call or text 988. In an emergency, call 911.