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Life events and senile dementia. Affective symptoms
1Department of Psychiatry, University College London Medical School.
Background:
Previous research in the elderly has linked threatening life events with depression. Dementia sufferers are known to be sensitive to stressful changes in their daily life such as relocation. This study investigates whether threatening life events are associated with depressive symptoms in dementia sufferers.
Method:
Using the Life Events and Difficulties Schedule, this study examined life events before admission in a group of 70 dementia patients compared with two control groups: dementia sufferers in the community and mentally fit elderly people matched for age and sex.
Results:
Life events with severe threat were not significantly more frequent in the dementia patients than in two control groups. However, depressive symptoms in the dementia sufferers were significantly associated with independent severe life events. This strong association was maintained when a multivariate analysis was used to control for the effects of other social factors and severity of cognitive impairment. This association appears to be specific to the threat aspect of life events since there was no association between depressive symptoms and events relating to change in the social environment.
Conclusion:
In dementia sufferers, threatening life events are associated with depressive symptoms. This means that dementia sufferers are responsive to stress in the same way as cognitively intact individuals, and clinicians need to be more aware of the social influences on them.