What is the current state of the case law on post traumatic stress disorder?

In reaching this conclusion, I am aware of the limited inferences permitted from an absence of symptoms described in medical records, as set out, for example, in Mallier v. Falcomer, 2021 BCSC 1827. However, here, the frequency of the worker’s many medical contacts, the lack of comment about psychological problems in most of the more lengthy medical reports that would be expected to be offer more complete information than mere chart notes, and the lengthy duration of what the worker now asserts was a long‑standing problem, all lead me to give little weight to the worker’s assertion that he continued to experience significant psychological problems in the intervening years. This, combined with the lack of medical opinion evidence substantiating a current PTSD diagnosis and relating the worker’s current symptoms to his 1997 claim, all combine to leave with me the conclusion that it is less than 50% likely that the worker’s recent difficulties are not reasonably related to the 1997 PTSD.