It is important to have a PTSD symptoms checklist. This is because it can help to identify the symptoms of post-traumatic stress disorder. In addition, not only does a PTSD checklist show what the signs could be, but it also shows how severe they have been in the past and over time. This can help with figuring out if a person has post-traumatic stress disorder or if they are just having temporary anxiety responses after an event due to other factors affecting them like their environment, etc.