Post-traumatic stress disorder and serum cytokine and chemokine concentrations in patients with rheumatoid arthritis✰

Although post-traumatic stress disorder (PTSD) is identified as a risk factor in the development of rheumatoid arthritis (RA), associations of PTSD with disease progression are less clear. To explore whether PTSD might influence disease-related measures of systemic inflammation in RA, we compared serum cytokine/chemokine (cytokine) concentrations in RA patients with and without PTSD. Participants were U.S. Veterans with RA and were categorized...