I just did a diaper change on my mother in law and noticed what looks like a pimple cluster on her butt cheek. I know she has had some kind of sore on it before, when we brought her home from a nursing home two months ago and she had scabs and redness in the same spot. I have no clue whether it's beginning stages of a bed sore, a rash, or just a simple pimple cluster. Since I've had no training whatsoever with adult care, I just want to know if she needs to go get checked out or if diaper cream is a cure all and I'm just being overly cautious. I put some cream on, just for the heck of it since it seemed to have helped the scabs last time, but any advice would be appreciated