IL6 and post-traumatic stress disorder: 2016). In addition, salivary levels of CRP and chemokines are significantly associated with PTSD symptoms (An et al. 2015; Robles et al. 2024) (Figure 1). Moreover, cerebrospinal fluid (CSF) analysis has further confirmed the inflammatory state in PTSD patients, particularly with significantly elevated levels of IL‐6 in the CSF (B. K. Kim et al. 2020).