Is There A Test To Determine The Cause Of Pain In Sigmoid Colon And Anal Canal?

my wife is on several opiod's because of cronice back pain. nothing else can be done about that issue. She is on Relistore 1inj 1.06 a day to help her digestive tract. She is having severe pain at the sigmoid colon and anal canal and when I massage the stomach her colon seems to move some what. Not entirely. Her primary care, who has a wife with similar back issues thinks she may have developed Lazy Colon. My wife's pain does ease after a movement but not with every movement. I know they can do some testing to find out if this is what she has, I was just wondering if their was anything I can do to ease her suffering while we jump through the hoop's, so to speak.
Mike Gann, PhD, ThD, ScD.