i was on lipitor and had to go to the hospital because i had sever leg pain. it was hard for me to lift my leg up. if you go to the lipitor website it tells you the sever side efect is leg pain w/o reason and could cause liver damage.
so i stop taking it and now im taking something called omega 3 fatty acids and it is maintaining my high blood pressure and cholesterol levels. so i dont have to worry about the side effects.
my first suggest to you is go to lipitor website and look up the side effects, do this with all the medication your mother is on and they you may find the culprit.