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Expect the block to provide you with several hours of pain relief. After this time, the pain will likely return. If the physicians have used steroid medication in addition to the local anesthetic, this may provide you with further pain relief after 36 to 48 hours.
Sometimes, this block is performed for diagnostic reasons. This means that your physicians have chosen to do this block in order to determine a possible cause for your pain. In this instance, you may or may not experience any pain relief.