What was this research about?
Chronic pain is common for people who have multiple sclerosis (MS). Chronic pain can be frequent, and may not go away. When pain is bad enough to limit our daily activities, it can sometimes make us feel down or depressed, also called “low mood.” In this study, we wanted to figure out how chronic pain contributes to lower mood. We looked to see if pain changes mood directly. We also wanted to know if pain changes mood indirectly by increasing: