some do some dont. depends upon many factors. your treatment providers can tell you which kind of system you have and what factors in to this depending upon your own diagnosis's, your recent testing results from january, mental and physical health, abuse history, whether or not your alcohol or drugs issues factor in.... my point theres lots of things that go into why a person would pretend sometimes and then switch other times, a big part of this you cant find online you have to go through your own treatment providers who will help you to discover all the hows, whats and whys your issues\ problems\ diagnosis's and such are the way they are for you.