Clin Exp Rheumatol
-
Fibromyalgia (FM) has been associated with affective spectrum disorders and other chronic pain disorders, which tend to co-occur in individuals and co-aggregate among families. The objective of our study was to investigate the genetic risk factors associated with the presence of related symptoms and with disease severity in subjects affected with FM. ⋯ Our findings indicate a role of the TACR1 gene in the development of sicca syndrome in subjects affected with FM.