Dissociative Alters and Suicide Ideation

​Dissociative Identity Disorder (DID) is a condition where an individual has two or more distinct identities (often called “alters”) that control their behaviour at different times. DID frequently develops as a response to severe trauma, especially in childhood. Each alter may have unique memories, emotions, and thought patterns, which may result in significant memory gaps and changes in behaviour.
 
It is not uncommon for alters to possess suicide ideation. Some individuals with DID are at notably high risk of suicide ideation and attempts. In fact, more than 70% of people with DID will attempt suicide at some point in their lives. Suicide risk can be compounded by frequent experiences of dissociation (a detachment from one’s body/mind), resulting from traumatic memories held by specific alters. The latter may be amnesiac for their actions, leading some alters to discover self-harm or suicidal attempts they do not recall.
 
Different alters within a DID system may hold distinct roles or emotions, including those related to self-harm or suicide. Some alters may experience or act on suicidal ideation intensely, while others do not. When a suicidal alter is present, the internal system may respond with protective actions, such as other alters stepping in to prevent self-harm or seeking external support. These internal conflicts can result in complicated feelings and behaviours around safety and threat. Suicidal thoughts or actions by an alter may occasionally be directed at other alters or stem from a desire to stop suffering associated with traumatic memories.

​Mechanisms Linking Dissociation to Increased Suicide Attempts
Dissociation, a disruption in the normal integration of consciousness, memory, identity, or perception, has been consistently linked to an increased risk of suicide attempts, not just ideation. Several key mechanisms explain this relationship:
 
Reducing Barriers to Action: Pain and Fear Dampening
Dissociation can diminish the experience of physical pain and fear, which are natural deterrents to acting on suicidal thoughts. When individuals are in a dissociative state, they may feel detached from their bodies, making it easier to engage in self-injurious or lethal behaviours that would otherwise be inhibited by pain or fear. This mechanism is supported by theoretical models and empirical studies showing that higher dissociation predicts more painful or lethal methods of suicide attempts.
 
Building Suicide Capability Through Habituation
According to the interpersonal theory of suicide, the capability to attempt suicide develops through repeated exposure to painful or fear-inducing experiences, which habituates individuals to these sensations. Dissociation may accelerate this habituation process by fostering a sense of detachment, thereby increasing one’s capability to act on suicidal urges. This is particularly relevant for individuals with histories of trauma (e.g., sexual abuse), where dissociation mediates the relationship between trauma and repeated suicide attempts.
 
Cognitive and Emotional Disconnection
Dissociation involves altered access to thoughts, feelings, and memories, which can lead to impaired judgment and reduced inhibitory control over impulsive behaviours. This disconnection may result in a narrowed focus on ending distress, with less consideration of consequences or alternatives.
 
Interaction with Suicidal Ideation and Other Risk Factors
Dissociation appears to have a unique role in the transition from suicidal thoughts to attempts, beyond the presence of ideation alone. While not all studies have fully disentangled dissociation’s effect from suicidal ideation, the prevailing evidence suggests dissociation specifically facilitates the enactment of suicidal behaviour. Pain tolerance may also interact with dissociation and suicidal ideation to further increase attempt risk.
 
Clinical and Theoretical Implications
Treatment of dissociation should be integrated into suicide prevention efforts, as addressing dissociative symptoms may reduce the capability to act on suicidal thoughts. Dissociative tendencies, especially detachment, may serve as a psychological “bridge” that allows individuals to overcome the natural fear and pain associated with suicide attempts.
 
Managing Suicidal Alters
Internal coping mechanisms may use strategies like switching to non-suicidal alters, grounding techniques, and care measures for the suicidal alter (e.g., comfort, supervision, or reaching out to trusted external supports). Professional psychotherapy focused on trauma, identity integration, and safety planning is essential for managing suicide risk in DID. Immediate intervention, such as crisis hotlines or emergency care, is crucial if one is at imminent risk. If you or someone you know is struggling with thoughts of self-harm, reach out to mental health professionals or crisis helplines immediately.
 
References
 
Brokke, S.S., Bertelsen, T.B., Landro, N.I., & Haaland, V.O. (2022, January 10). The Effect of Sexual Abuse and Dissociation on Suicide Attempt. BMC Psychiatry.
Pachkowski, M.C., Rogers, M.L., Saffer, B.Y., Caufield, N.M. & Klonsky, E. D. (2021, January 1). Clarifying the Relationship of Dissociative Experiences to Suicide Ideation and Attempts: A Multimethod Examination in Two Samples. The University of Southern Missisippi. 

Srinivansan, S., Harnett, N.G., Zhang, L., Dahlgren, M.K., Jang, J., Lu, S., Nephew, B.C., Palermo, C.A., Pan, x., Eltabakh, M.Y. Frederick, B.B., Gruber, S.A., Kaufman, M.L., King, J., Ressler, K.J., Winternitz, S., Korkin, D. & Lebois, L.A.M. (2022, November 18; Vol. 13 (2)).  Unravelling psychiatric heterogeneity and predicting suicide attempts in women with trauma-related dissociation using artificial intelligence. European Journal of Psychotraumatol.