I’ve had a colonoscopy (without pain relief) where they took biopsies. The doctors said the biopsies wouldn’t hurt because the colon couldn’t feel pain, and they were indeed painless. The amount of air they pumped in was horrifically painful however.
Trapped gas sounds trivial, but can also be extremely painful. Ulcerative colitis also hurts. So does diarrhoea.
So how do these pain mechanisms work? What causes the pain, if the interior of the colon is unfeeling?
In: Biology
As it swells it starts pushing on other muscles, organs, and lining that does have nerves.
It’s like a person who is too big for an airplane seat who is pushing into the other person. The big person is mostly fine but the other person now is uncomfortable and tells the stewards what’s wrong
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