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A closer look at the influence of mood and disability on illness intrusiveness in multiple sclerosis.

PURPOSE
Multiple sclerosis (MS) patients often report high levels of illness intrusiveness. The direct and indirect effects of disability and psychological symptoms on illness intrusiveness remain largely unknown, despite their pervasiveness. The present study aimed to examine how depression and anxiety can serve as mechanisms through which disability may impact illness intrusiveness in 3 life domains-instrumental activities, intimacy, and relationships and personal development.


METHOD
Participants (N = 72) were adults (Mage = 47.86, SD = 11.79), predominantly female (73.6%) and diagnosed relapse-remitting MS (81.9%). The data was used from an archival neuropsychological database. Data on self-report measures were analyzed to examine the relationship between disability and illness intrusiveness, with depression and anxiety as mediators. Mediation models were run for total illness intrusiveness and the subscales.


RESULTS
Depression and anxiety were significant mediators through which disability may impact overall illness intrusiveness. When examining life domains, depression was a significant mediator in all domains. Anxiety was only a significant mediator between disability and relationships/personal development.


CONCLUSIONS
Results suggest that greater disability both directly and indirectly interferes with illness intrusiveness via depression and anxiety. However, life domains are differentially impacted. Thus, this study helps to guide interventions on the best symptoms to target to improve illness intrusiveness and overall quality of life. (PsycInfo Database Record (c) 2022 APA, all rights reserved).