Incongruence in Perceptions of Pain: Associations with Mental Health in Couples Living with Fibromyalgia.

Guided by the theory of dyadic illness management, this study examined the association between the within-couple incongruence regarding perceptions of pain experienced by adults with fibromyalgia (AwFM) and symptoms of depression and anxiety in AwFM and their partners. Participants included 204 couples. Three second-order dyadic variables were created from the couples' perceptions of pain interference experienced by AwFM: (1) absolute magnitude of incongruence in perception of pain, (2) average perception of pain, and (3) direction of incongruence (i.e., who perceives pain to be higher). Structural equational modeling was used to examine the association between the three dyadic variables and AwFM and partner symptoms of depression and anxiety, adjusting for covariates. These steps were repeated for pain severity. Higher average perception of pain interference within the couple was associated with greater symptoms of depression and anxiety in AwFM and partners. AwFM exhibited greater symptoms of depression when their perception of their pain interference was higher than their partner's. Incongruence variables were not significantly associated with AwFM or partners' anxiety symptoms. Near identical results were found for pain severity. A dyadic approach to mental health treatment, which includes enhanced communication skills, should be adopted to optimize the mental health of couples living with fibromyalgia.