How can i know if you feel the needles go into your back when you had a discogram ?

With you conscious : This is a test that you have to verbally respond to when placed on a table that x-rays pass through ; a needle is guided sterilely into the disc under local anesthesia with some light IV sedation ; confirmed to be in the right place with contrast injected followed by sterile water to see what response is given as to whether the disc is the cause of pain. A normal disc does not have pain elicited.