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Abstract

Objective:

A wide variety of neuropsychiatric symptoms are described during the acute phase of anti-N-methyl-d-aspartate receptor encephalitis (ANMDARE), including psychosis, mania, depression, and catatonia, but there are few reports on suicidal thought and behaviors in ANMDARE. To address this gap in the literature, the authors measured the presence of suicidal thoughts and behaviors among a large cohort of Mexican patients diagnosed with definite ANMDARE.

Methods:

This observational and longitudinal study included patients with definite ANMDARE hospitalized at the National Institute of Neurology and Neurosurgery of Mexico between 2014 and 2021. Suicidal thoughts and behaviors were assessed before and after treatment by means of a clinical interview with relatives and a direct clinical assessment with each patient. Thoughts of engaging in suicide-related behavior and acts of suicidal and nonsuicidal self-directed violence before and during hospitalization were recorded.

Results:

From a total sample of 120 patients who fulfilled the diagnostic criteria for definite ANMDARE, 15 patients (13%) had suicidal thoughts and behaviors during the acute phase of the disease. All 15 of these patients experienced psychosis and had suicidal ideation with intention. Three patients engaged in preparatory behaviors and seven carried out suicidal self-directed violence. Psychotic depression and impulsivity were more frequent among those patients with suicidal thoughts and behaviors than among those without any form of suicidality. Four patients engaged in self-directed violence during hospitalization. Remission was sustained in 14 of 15 patients, with suicidal ideation and self-directed violence persisting during follow-up in only one patient.

Conclusions:

Suicidal thoughts and behaviors are not uncommon during the acute phase of ANMDARE. On the basis of our sample, the persistence of these features after immunotherapy is rare but may be observed. A targeted assessment of suicidal risk should be strongly considered in this population.

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Information & Authors

Information

Published In

Go to The Journal of Neuropsychiatry and Clinical Neurosciences
Go to The Journal of Neuropsychiatry and Clinical Neurosciences
The Journal of Neuropsychiatry and Clinical Neurosciences
Pages: 368 - 373
PubMed: 37151035

History

Received: 17 November 2022
Revision received: 16 January 2023
Accepted: 2 February 2023
Published online: 8 May 2023
Published in print: Fall 2023

Keywords

  1. Anti-NMDAR Encephalitis
  2. Autoimmune Encephalitis
  3. Autoimmune Psychosis
  4. Encephalitis
  5. Suicide
  6. Suicidality

Authors

Affiliations

Alberto Tellez-Martinez, M.D., M.Sc.
Neuropsychiatry Unit, National Institute of Neurology and Neurosurgery of Mexico (Tellez-Martinez, Restrepo-Martinez, Espinola-Nadurille, Martinez-Angeles, Martínez-Carrillo, Ramirez-Bermudez); Encephalitis Society, Malton, and Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom (Easton); Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London (Pollak).
Miguel Restrepo-Martinez, M.D.
Neuropsychiatry Unit, National Institute of Neurology and Neurosurgery of Mexico (Tellez-Martinez, Restrepo-Martinez, Espinola-Nadurille, Martinez-Angeles, Martínez-Carrillo, Ramirez-Bermudez); Encephalitis Society, Malton, and Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom (Easton); Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London (Pollak).
Mariana Espinola-Nadurille, M.D., M.Sc.
Neuropsychiatry Unit, National Institute of Neurology and Neurosurgery of Mexico (Tellez-Martinez, Restrepo-Martinez, Espinola-Nadurille, Martinez-Angeles, Martínez-Carrillo, Ramirez-Bermudez); Encephalitis Society, Malton, and Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom (Easton); Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London (Pollak).
Victoria Martinez-Angeles, M.D.
Neuropsychiatry Unit, National Institute of Neurology and Neurosurgery of Mexico (Tellez-Martinez, Restrepo-Martinez, Espinola-Nadurille, Martinez-Angeles, Martínez-Carrillo, Ramirez-Bermudez); Encephalitis Society, Malton, and Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom (Easton); Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London (Pollak).
Francisco Martínez-Carrillo, M.D.
Neuropsychiatry Unit, National Institute of Neurology and Neurosurgery of Mexico (Tellez-Martinez, Restrepo-Martinez, Espinola-Nadurille, Martinez-Angeles, Martínez-Carrillo, Ramirez-Bermudez); Encephalitis Society, Malton, and Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom (Easton); Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London (Pollak).
Ava Easton, Ph.D.
Neuropsychiatry Unit, National Institute of Neurology and Neurosurgery of Mexico (Tellez-Martinez, Restrepo-Martinez, Espinola-Nadurille, Martinez-Angeles, Martínez-Carrillo, Ramirez-Bermudez); Encephalitis Society, Malton, and Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom (Easton); Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London (Pollak).
Thomas Pollak, Ph.D., M.R.C.Psych.
Neuropsychiatry Unit, National Institute of Neurology and Neurosurgery of Mexico (Tellez-Martinez, Restrepo-Martinez, Espinola-Nadurille, Martinez-Angeles, Martínez-Carrillo, Ramirez-Bermudez); Encephalitis Society, Malton, and Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom (Easton); Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London (Pollak).
Jesus Ramirez-Bermudez, M.D., Ph.D. [email protected]
Neuropsychiatry Unit, National Institute of Neurology and Neurosurgery of Mexico (Tellez-Martinez, Restrepo-Martinez, Espinola-Nadurille, Martinez-Angeles, Martínez-Carrillo, Ramirez-Bermudez); Encephalitis Society, Malton, and Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, United Kingdom (Easton); Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London (Pollak).

Notes

Send correspondence to Dr. Ramirez-Bermudez ([email protected]).

Competing Interests

The authors report no financial relationships with commercial interests.

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