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Annette van Schagen

8 papers in the library · 560 citations · publishing 2013-2026

Papers

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The occurrence and potential role of mystical experiences in MDMA-assisted therapy for PTSD: A secondary analysis

Journal of Psychopharmacology August 6, 2026 Tijmen Bostoen, Erwin Krediet, Annette van Schagen et al.

Background: The potential safety and efficacy of the psychedelic 3,4-methylenedioxymethamphetamine-assisted therapy (MDMA-AT) for post-traumatic stress disorder (PTSD) has been researched in phase 2 and phase 3 clinical trials. We examined the occurrence and role of mystical experiences in MDMA-AT. Methods: Data were sourced from two phase 2 randomized trials of MDMA-AT for chronic PTSD, in...

Treating posttraumatic nightmares in trauma-affected refugees: An investigation of outcome predictors of imagery rehearsal therapy.

Journal of Psychiatric Research 2026 Ola Hornmoen, Jessica Carlsson, Jesper Dammeyer et al.

A recent randomized controlled trial (RCT) did not find an effect of imagery rehearsal therapy (IRT) for nightmares as an add-on to treatment as usual in a sample of trauma-affected refugees. However, certain factors may have accounted for substantial variations in treatment outcomes. This study aimed to test whether symptom severity, cognitive functioning, use of an interpreter, motivation for...

DOI: 10.1016/j.jpsychires.2025.10.049 (opens in new tab) Full text (opens in new tab) Nightmare-focused therapy Nightmares Psychotherapy Refugees +1

Reviewing the Potential of Psychedelics for the Treatment of PTSD

The International Journal of Neuropsychopharmacology March 12, 2020 Erwin Krediet, Tijmen Bostoen, Joost J. Breeksema et al. 262 citations

Abstract There are few medications with demonstrated efficacy for the treatment of posttraumatic stress disorder (PTSD). Treatment guidelines have unequivocally designated psychotherapy as a first line treatment for PTSD. Yet, even after psychotherapy, PTSD often remains a chronic illness, with high rates of psychiatric and medical comorbidity. Meanwhile, the search for and development of drugs...

Aetiology and treatment of nightmare disorder: State of the art and future perspectives

Journal of Sleep Research January 29, 2019 Annika Gieselmann, Malik Ait Aoudia, Michelle Carr et al. 192 citations

This consensus paper provides an overview of the state of the art in research on the aetiology and treatment of nightmare disorder and outlines further perspectives on these issues. It presents a definition of nightmares and nightmare disorder followed by epidemiological findings, and then explains existing models of nightmare aetiology in traumatized and non-traumatized individuals. Chronic...

DOI: 10.1111/jsr.12820 (opens in new tab) Nightmare Distress Psychological intervention Psychotherapist +2

Nightmare Disorder, Psychopathology Levels, and Coping in a Diverse Psychiatric Sample.

Journal of Clinical Psychology 2017 Annette van Schagen, Jaap Lancee, Marijke L. Swart et al.

Nightmares are associated with psychopathology and impaired coping in the general population. However, little is known about this association in a psychiatric population. In this study, we investigate whether patients with diverse psychiatric disorders have increased symptomatology and different coping styles if they suffer from comorbid nightmare disorder. Participants were 498 patients with...

Long-term treatment effects of imagery rehearsal therapy for nightmares in a population with diverse psychiatric disorders

UvA-DARE 2016 Annette van Schagen, Jaap Lancee, Victor I. Spoormaker et al. 8 citations

Nightmares are a common problem with debilitating consequences. Meta-analyses have revealed that imagery rehearsal therapy (IRT), in which the storyline of the recurring nightmare is changed, is the treatment of choice for nightmares. In a randomized clinical trial, we recently demonstrated that IRT was also effective in a population of patients with diverse psychiatric disorders. In this...

Imagery rehearsal therapy in addition to treatment as usual for patients with diverse psychiatric diagnoses suffering from nightmares: a randomized controlled trial.

The Journal of Clinical Psychiatry September 1, 2015 Annette van Schagen, Jaap Lancee, Izaäk W De Groot et al.

Nightmares are associated with psychopathology and daily distress. They are highly prevalent in a psychiatric population (30%). Currently, imagery rehearsal therapy (IRT) is the treatment of choice for nightmares. With IRT, the script of the nightmare is changed into a new dream, which is imagined during the day. However, the effects of IRT in a psychiatric population remain unknown. The aim of...

Prevalence of Nightmare Disorder in Psychiatric Outpatients

Psychotherapy and Psychosomatics 2013 Marijke L. Swart, Annette van Schagen, Jaap Lancee et al. 98 citations

Nightmares can cause great suffering as they disturb sleep, affect daily functioning and overall well-being. They are associated with psychopathology like anxiety disorders, more specifically posttraumatic stress disorder (PTSD), psychosis, personality pathology, suicide risk, and substance abuse [1,2]. Two to five percent of the general adult population suffers from one or more nightmares a...