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Chapter Two - Stress, Vulnerability, and Suicide

The Stress–Diathesis Model

Published online by Cambridge University Press:  22 May 2019

Kees van Heeringen
Affiliation:
Ghent University
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Summary

Although there are many pathways to suicide, studies in the domains of neuropsychology, cognitive psychology, neurobiology, and clinical psychiatry provide increasing evidence in support of a stress–diathesis model of suicidal behavior. While depression is the common final pathway to suicidal behavior, the vast majority of depressed individuals neither attempt nor complete suicide. It appears that a diathesis to suicidal behavior differentiates depressed individuals who will kill themselves from other depressed patients. The diathesis may be due to (epi-)genetic effects and childhood adversity, and is reflected by a distinct biological, psychological and clinical profile. This chapter will first review stress-diathesis models of suicidal behavior, ranging from cognitive models such as the “cry of pain” model to a neurobiological model in which deficient decision-making and its neural basis are central issues. Second, implications for treatment and prevention will be discussed. The identification of diathetic traits can be expected to facilitate early recognition of suicide risk. Vulnerability traits are open to modification early in life, and interventions during sensitive periods of development may have durable effects on vulnerability and resilience. The antisuicidal effects of drugs such as lithium and clozapine may well exert such effects via neurobiological components of the diathesis such as the serotonergic neurotransmission system.

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Publisher: Cambridge University Press
Print publication year: 2018

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