Of more concern to medical professionals are the delayed-onset and chronic forms of the disorder. Because of the length of time between the trauma and the appearance of symptoms, the link between them is often overlooked. Also, because the symptoms have been accruing over a long period, the condition is often more difficult to treat.
比較令醫療人員擔憂的，即是慢性和遲延性的癥狀，因為它相隔一段甚久時間才慢慢發病，因此常常被忽略與打擊事件之連帶關係，病情也會因為累積過深，而難以治癒。