Stressful life events, post-traumatic stress disorder symptoms and mental health in individuals with intellectual disabilities: a scoping review.
PTSD research in ID is a jumble of definitions, so cast a wide net when you screen for trauma symptoms.
01Research in Context
What this study did
Andrews et al. (2024) mapped every paper that looked at PTSD symptoms after stressful events in people with intellectual disability. They screened 38 studies. The team asked: how often is PTSD measured, what events count as traumatic, and do the studies use the same rules?
What they found
Almost no two studies used the same definition of a traumatic event. Some counted only big disasters. Others counted everyday bullying. Because the yardsticks differ, we still cannot say how common PTSD really is in this group.
How this fits with other research
Luteijn et al. (2020) found zero trials testing combined PTSD and addiction therapy for adults with mild ID. Andrews et al. (2024) now shows why: researchers cannot even agree on what counts as trauma, so trials never get off the ground.
Berger et al. (2015) saw higher post-traumatic stress scores after missile attacks. Their tight definition of a single war event clashes with the messy mix M et al. found. The papers do not contradict; they simply measure different ends of the stress spectrum.
Vervoort-Schel et al. (2021) reported that 8 out of 10 kids with ID already have adverse childhood events. M et al. adds that most studies skip PTSD checks after these events, leaving clinicians in the dark.
Why it matters
Right now you cannot trust a single PTSD screen that relies only on DSM-5 "big-T" trauma lists. Ask about bullying, sudden moves, or loss of staff even if no hurricane or assault happened. Push your team to write clear, plain-language definitions before you track symptoms. That small step turns future data into something you can actually use.
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02At a glance
03Original abstract
BACKGROUND: Stressful life events are events that do not fulfil the A criterion of PTSD in the DSM-5(TR) but are perceived as negative by the person. There is an ongoing debate about the usefulness of the A criterion as a gate criterion for PTSD, and especially regarding which events qualify as traumatic or stressful life events. This debate is particularly important for individuals with intellectual disabilities (ID) or borderline intellectual functioning (BIF), as they seem to be more likely to experience traumatic and stressful life events than their peers without ID-BIF and appear to be more susceptible to the disruptive effects of these events. As a result, people with ID-BIF are more likely to develop mental health and behavioural problems. There is insufficient knowledge about how the relationship between stressful life events and PTSD symptoms should be interpreted, how traumatic and stressful life events are defined and distinguished in people with ID, and whether the A criterion should be broadened for individuals with ID-BIF. The aim of this scoping review was to understand stressful life events and their relationship with PTSD symptoms, other mental health and/or behavioural problems in individuals with ID-BIF. METHODS: The scoping review was conducted in accordance with the JBI methodology for scoping reviews and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR). RESULTS: Thirty-eight studies were included. Five studies focused on stressful life events and PTSD symptoms. The other studies examined associations between stressful life events and other mental health and/or behavioural problems. Most of the studies did not clearly differentiate between stressful and traumatic events according to the A criterion of PTSD in the DSM-IV (TR) or DSM-5(TR). Of the six studies in which stressful life events were specified and could be distinguished from traumatic events, one found a positive association between PTSD symptoms and stressful life events and five showed weak to strong positive associations with other mental health and/or behavioural problems. CONCLUSIONS: PTSD symptoms following stressful life events in individuals with ID-BIF are underrepresented in the literature. The lack of a clear definition of stressful life events leads to a gap in the knowledge on whether and how stressful life events may lead to PTSD symptoms, other mental health and/or behavioural problems in individuals with ID-BIF. Therefore, no general conclusions or recommendations can be made regarding the appropriateness of the PTSD A criterion for individuals with ID-BIF. Further research is needed to establish the role of stressful life events in relation to PTSD symptoms and to inform the assessment and effective treatment in people with ID-BIF, as expert clinical experience studies suggest that broadening the PTSD A criterion should be considered for people with ID-BIF.
Journal of intellectual disability research : JIDR, 2024 · doi:10.1111/jir.13178