This interpretation is consistent with the findings of 3 studies, namely (a) that an elevated blood CRP is predictive of PTSD development34, (b) that intravenous (IV) injection of hydrocortisone (an anti-inflammatory agent) shortly after the occurrence of the traumatic event reduced the chance of PTSD development36, and (c) that IV injection of ketamine (a noncompetitive NMDA antagonist with relatively selective action in the midcingulate cortex41) in chronic PTSD alleviates the severity of its symptoms42. Here, CRP is linked to post-traumatic stress disorder.