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Michel Lejoyeux

9 papers in the library · 29 citations · publishing 2020-2026

Papers

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Nightmare disorder and depression: Exploring a neglected clinical association.

Journal of Psychiatric Research August 1, 2026 Julia Maruani, Emmanuelle Clerici, Michel Lejoyeux et al.

Nightmares are overrepresented in psychiatric disorders and are strongly associated with suicidality, especially in Major Depressive Episode (MDE). This study had two main objectives: (1) to determine an optimal diagnostic cutoff for the Nightmare Severity Index (NSI) to identify Nightmare Disorder (ND), and (2) to compare the clinical profiles of MDE patients with ND (MDE-ND) and without ND...

Dream tyranny: Hyperonirism diagnostic criteria.

L'Encephale June 1, 2026 Pierre A Geoffroy, Sammy Saadi, Sibylle Mauries et al.

Hyperonirism, or "epic dreaming," is an emerging clinical phenomenon characterized by excessive, vivid, and continuous dream activity associated with non-restorative sleep and daytime fatigue. Despite historical descriptions, it remains poorly defined and unrecognized by current nosological systems. We describe four patients assessed in expert sleep and psychiatry centers, presenting with...

DOI: 10.1016/j.encep.2026.03.006 (opens in new tab) Full text (opens in new tab) Dream overflow Débordement onirique Epic dreaming Excessive dreaming +9

Imagery Rehearsal Therapy (IRT) is associated with reduced nightmare severity and depressive, anxiety and suicidal symptoms in adults with Major Depressive Episode.

International journal of clinical and health psychology : IJCHP 2026 Julia Maruani, Nathan Martins, Emmanuelle Clerici et al.

Nightmare Disorder characterized by recurrent dysphoric dreams is strongly associated with major depressive episodes (MDE) and suicidal risk. Imagery rehearsal therapy (IRT) is the standard treatment for nightmares, but its effectiveness in individuals with MDE remain understudied. This study evaluated whether IRT is associated with greater improvement in nightmare symptoms compared to sleep...

Nightmares Fluctuate Across the Menstrual Cycle and May be More Pronounced in Women With Premenstrual Syndrome

Brain and Behavior February 28, 2025 Léa Dobler, Océane Richard, Emmanuelle Clerici et al. 2 citations

INTRODUCTION: Premenstrual syndrome (PMS) affects nearly half of women worldwide and is associated with sleep disturbances, though the specific relationship between PMS and nightmares remains underexplored. Clinical observations suggest a potential link, leading this study to investigate whether women with PMS experience more frequent or intense nightmares compared to those without PMS....

DOI: 10.1002/brb3.70383 (opens in new tab) Menstrual cycle Premenstrual dysphoric disorder Hormone

The nightmare severity index (NSI): A short new multidimensional tool for assessing nightmares.

Journal of Sleep Research May 1, 2024 Pierre A Geoffroy, Émilie Stern, Julia Maruani et al.

This psychometric pilot study aims to evaluate a new multidimensional simple scale, named the nightmare severity index (NSI) - close to the existing insomnia (ISI) and hypersomnia (HSI) severity indexes. The NSI encompasses all main dimensions of nightmare disorder, evaluating four subdimensions: frequency, emotional impact, diurnal impact, and nocturnal impact of nightmares. The NSI was...

Mental Health during fatherhoood. Biopsychosocial aspects and questionnaire for depression PHQ9

European Psychiatry March 1, 2023 Pierre A Geoffroy, Rodolphe Borand, Marine Ambar Akkaoui et al.

Introduction Sleep and circadian markers are of increasingly growing interest to help better predicting suicide. Indeed, specific sleep disorders and circadian rhythm disorders have been associated to suicidal behaviors, and the most replicated findings are insomnia and nightmares. Nevertheless, these interesting preliminary studies did not examine the chronology and trajectories of these dream...

Bad Dreams and Nightmares Preceding Suicidal Behaviors.

The Journal of Clinical Psychiatry November 23, 2022 Pierre A Geoffroy, Rodolphe Borand, Marine Ambar Akkaoui et al.

Objective: Nightmares seem to predict suicidal behaviors, and the aim of this study is to explore the chronology and trajectories of alterations in dream contents before a suicidal crisis, distinguishing 3 different experiences: bad dreams, nightmares, and suicidal scenarios during dreams. Methods: This naturalistic study included individuals hospitalized between January 2021 and May 2021 in a...

Nightmares in Patients with Major Depressive Disorder, Bipolar Disorder, and Psychotic Disorders: A Systematic Review.

Journal of Clinical Medicine December 9, 2020 Marine Ambar Akkaoui, Michel Lejoyeux, Marie-Pia d'Ortho et al.

Chronic nightmares are very common in psychiatric disorders, affecting up to 70% of patients with personality or post-traumatic stress disorders. In other psychiatric disorders, the relationships with nightmares are poorly known. This review aimed to clarify the relationship between nightmares and both mood and psychotic disorders. We performed a systematic literature search using the PubMed,...

MDMA Use by Paris Medical Students: Prevalence and Characteristics

Substance Use & Misuse October 24, 2020 Balthazar Bazin, David Duroy, Michel Lejoyeux 27 citations

3,4-Methylenedioxy-N-methylamphetamine (MDMA) is increasing being used by youth in Europe and in France, but characteristics of its use are unknown. Objectives: The aim was to characterize MDMA use in a sample of French medical students. Methods: Cross-sectional study of Paris VII medical students (N = 592) with an online self-reporting questionnaire. Results: 592 students completed the online...