The Relation Between Social and Physical Pain in Individuals with Fibromyalgia

Accruing evidence suggests that the neural underpinnings of the social and physical pain systems overlap. The preponderance of the data are based on experimental manipulations of healthy individuals. Those data suggest that the experience of social pain, in the form of rejection, influences the experience of physical pain. The current study sought to extend this literature in four ways: first it examined whether the relation between social pain and physical pain holds in individuals with chronic pain. Second, it evaluated the rejection-pain relation in everyday life though use of daily diary repots. Third, it evaluated whether aversive social events other than rejection (i.e., conflict) are also related to daily pain, to determine, if the relation to pain is specific to rejection. Finally, it tested whether the relational context (i.e., chronic level of rejection or conflict) predicted pain levels. The sample for the current study is comprised of 123 partnered individuals with fibromyalgia (FM) who completed 21 daily diaries that assessed their experience of spousal rejection, spousal conflict, and daily physical pain. Multilevel modeling was used to examine 1) the within person relations between daily increases in negative spousal events, and reports of chronic physical pain; and 2) The moderating effect of chronic spousal discord on the daily negative event pain relations. Results showed a marginally significant relation between daily rejection events and increased levels of pain, and a significant relation between daily conflict events and increased levels of pain. Keywords: chronic pain, social pain, rejection, conflict, Fibromyalgia