Hi,
If RSD progresses, or shows no response to medication, a widely employed therapeutic intervention for RSD is cervical or lumbar paravertebral sympathetic block with anesthetic injections such as mepivacaine or
bupivacaine. The pain relief may be extremely good, for a time more than the action of the anesthetic.
Some patients may be cured by a surgical procedure that involves excision of one or more sympathetic nerves, also called as sympathectomy.