Treating nightmares with imagery interventions

Conditions: ightmares (Nachtmerries)
Imagery rescripting therapy (Imagery rescripting therapie)
Imaginal exposure therapy (Imaginaire exposure therapie)

Registration Number: NL-OMON27319

Lead Sponsor: niversiteit van Amsterdam, Department of Clinical Psychology; UvA PsyPoli (www.psypoli.nl)

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Pending

Sex: Not specified

Target Recruitment: 90

Inclusion Criteria

18 years of age or older; one or more nightmare(s) per week, with a recurrent (emotional) theme; nightmares have to impair the daily functioning of the client (nightmare disorder according to DSM-5); fluency in Dutch

Exclusion Criteria

A current diagnosis of alcohol and/or drug abuse or dependency; PTSD resulting from protracted and recurring trauma (type 2 trauma); psychotic disorder; CBT-based psychotherapy for nightmare symptoms in the preceding 12 months; Co-morbidity as such will not be reason for exclusion but the nightmares must be the principal diagnosis. If applicable, participants will be asked to keep their medication intake stable during and 1-8 weeks before treatment (depending on the type of medication).

Study & Design

Study Type: Interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
1. Nightmare frequency<br>2. Nightmare distress <br>

Secondary Outcome Measures

Name	Time	Method
1. Zelf Inventarisatie Lijst (ZIL; Hovens, Bramsen, & van der Ploeg, 2000)<br>2. Sleep complaints (Insomnia Severity Index; Morin, 1993) <br>3. Nightmare beliefs (10-15 item questionnaire regarding nightmare beliefs) <br><br>Mediators of the treatment effect:<br>1. Nightmare distress (at night, as well as during the day)<br>2. Nightmare mastery (nightmare content)<br>3. Nightmare controllability (emotions elicited by the nightmare)<br>4. Predictability of emotions experienced during the nightmare<br>5. Tolerability of emotions experienced during the nightmare<br>6. Nightmare vividness<br>7. Sleep quality<br>8. Subjective Units of Distress (SUDs)