Sleep science

Trauma-related nightmares

Post-traumatic nightmares behave differently from ordinary bad dreams, and unlike most things on this site, they have a treatment with real evidence behind it.

7 min readintermediateStrictly reviewed · cited

Most nightmares are ordinary. They are unpleasant, they pass, and they need nothing but a note in a journal.

Post-traumatic nightmares are a different object, and this page exists to say so plainly rather than to interpret them.

How they differ

  • They repeat, often with much less variation than ordinary dreams.
  • They can replay the event or a close version of it, which ordinary dreams almost never do. Dreams normally recombine fragments rather than reproducing episodes.
  • They can occur outside REM, unlike typical nightmares.
  • They wake you, repeatedly, and the dread persists after waking.

The part worth knowing

Chronic nightmares are treatable, and the best-supported treatment is not analysis. Imagery rehearsal therapy asks you, while awake, to write a changed version of the recurring nightmare, any change you choose, and rehearse that version daily. Across trials this reduces nightmare frequency and distress.

It does not require you to work out what the nightmare means. That is the point: the mechanism appears to be about the rehearsed script, not about insight.

There is a free rescripting programme in the Learn section that follows this structure. It is a self-help version of a clinical protocol, and it is not a substitute for treatment.

When to stop reading a dream website

If nightmares follow a traumatic event, recur, and affect your sleep or your days, this is a matter for a doctor or a therapist, not for a dream dictionary. That is the honest limit of what any site like this can offer, and a site that implied otherwise would be doing you harm.

Nothing here is a diagnosis, and no page on this site can tell you whether what you are experiencing is post-traumatic.

Sleep-science pages summarise published research for general education. They are not a substitute for a clinician. If a sleep problem is affecting your health, speak to a doctor, and never change prescribed medication because of something you read here.

Sources and reviewed references

2 references. What these labels mean

  1. 1.Clinical Management of Chronic Nightmares: Imagery Rehearsal TherapySleep medicine

    Barry Krakow and Antonio Zadra (2006) · Behavioral Sleep Medicine

    Cited for: That rehearsing a rewritten version of a recurring nightmare while awake reduces nightmare frequency and distress.

  2. 2.Nightmares: A New Neurocognitive ModelPeer-reviewed research

    Tore Nielsen and Ross Levin (2007) · Sleep Medicine Reviews

    Cited for: A model of nightmare production combining affect load and affect distress, and the distinction between bad dreams and nightmares proper.