Reproduce symptoms. Provocative exam relative to a discogram means they are trying to recreate your pain symptoms to determine which disc is causing your pain.
All are provocative . It means that the injection of sterile contrast and water into the disc is meant to provoke a response. A normal response is no pain or a pressure sensation. A degenerative disc may cause an ache or pain that is not similar to your pain and its pattern of distribution while a concordant or exact pain response is one recreating the typical pain over the typical distribution- the pain is provoked, .