Patient Misconceptions about Pain

I'm working on a paper dealing with common misconceptions patients have about pain (i.e. "The nurse will know when I'm hurting, so I don't have to ask for my meds" "Pain is just a normal part of getting old and I don't want to whine about it" "If I take X, I'll become addicted", etc.) - and how that affects their ability to communicate their pain.
I've done a bit of research already, but I'd like to get some input from those who are working on a clinical setting. So, if you don't mind, could you tell me what kind of misconceptions have you encountered, how that influenced the patients ability to communicate his/her pain to you - and how you dealt with it (diagnosis, intervention, etc.)?
Thanks in advance