Yes I believe that you only have to believe that it is a life threatening situation, furthermore trauma compounds over time adding to the idea that trauma doesn't have to be from one event. This is particularly noticeable in those who have have been tormented for long periods of time, you yourself are describing trauma that is compounding over your whole lifetime and not one particular event. Often times there is one particular event, that will result in the post traumatic stress and the eventual full blown PTSD, it is usually not seen by these people as their prior childhood trauma as the cause, but only the event that broke the camel's back. That is simply not true. The prior trauma just made you susceptible to not recovering from post traumatic stress later on after a further trauma.
Someone purposely faking PTSD is just seeking attention, some might be just looking to get on disability. I myself haven't tried to get disability, I lost my job in the midst of it all and now I want to get back to work to see if i can hack it somewhere, anywhere really...the job market isn't good. I was pretty severe at first but as I have gotten along things have gotten better with therapy, I believe there are different degrees of PTSD but I don't believe everyone has to suffer as 'severe' forever, I am not concerned with fakers, I just want to focus on myself and get as good as I can be. Let the the fakers suffer their fake lives forever, we are already better than them. Although I cannot deny that disability squandered on fakers does not help those who are in need, particularly those who are still having major issues after a few months, because by then they have already piled up huge bills from being in and out of the hospital, going to doctors, taking expensive tests to rule out other conditions. Disability to those who need it at this stage would be a godsend.
I still don't want to get worked up over it, I still just want to focus on staying on a healthy track, staying off drugs and alcohol and being active..I have already seen how numbing can cripple with growing symptoms.