Resources & References

Operational stress injuries (OSI) can have symptoms similar to post-traumatic stress disorder (PTSD) but are caused by a series of smaller traumas or stressful events over a long period of time. Individuals with OSI’s may have diagnoses other than PTSD including acute stress disorder, adjustment disorder, or an anxiety or depressive disorder. (OSI and PTSD.) Also see: Posttraumatic Stress Disorder – Entitlement Eligibility Guidelines – Veterans Affairs Canada

VAC has defined an OSI as “any persistent psychological difficulty resulting from operational duties performed while serving with the Canadian Forces or as a member of the RCMP”. These psychological difficulties can include post traumatic stress disorder (PTSD), depression, anxiety, and addictions. An OSI can occur as a result of a variety of stresses including exposure to a traumatic incident, cumulative exposure to human atrocities, or simply the sustained exposure to intense military operation”. (VAC Understanding Mental Health)