this is patient specific, if they are faking there is generally a reason. I do my best to find what the reason is. Look around, there are always clues, even in the hospital.
I discovered at some point that most people who are fakers generally need help of the nonmedical variety. No reason to try and fit a square peg in the round hole. Is there something you can do in order to help them?
My first EMT instructor once told me:
"The 2 most important questions you will ever as a patient is:
Can you walk? Have you tried?"
I have several times simply told patients that I knew they were faking, I wasn't carrying them, and if they wanted to go the the hospital they were to walk to the truck and not sit on the cot because that is for sick people.
Strangely enough it worked rather well in my experience.
For the truly hell bent on faking, I try to do as little as possible now. After all, if it is attention they seek, there really is no indicated medical intervention.