My father is going to a new pain doctor today and was wondering what type of questions he should ask. My dad has Degenerative disk disease among other things and doesn't know what all to ask the doctor, could someone give me/him some advice? He takes OC 80's and oxycodone 30's for pain and has been on this combo for like 10 years but would like to switch his roxicodone 30's for dilaudid, should he bring this up? What all should he ask? thanks...