What is CRPS?


Complex Regional Pain Syndrome is a complex and chronic (lasting greater than 6 months) pain condition that involves the entire nervous system. CRPS is typically diagnosed after an injury (minor or major) and is believed to be caused by a malfunction of, or damage to the Peripheral or Central Nervous Systems.  It is also considered to be an inflammatory and autoimmune condition, in addition to the chronic pain.


CRPS has had multiple name changes since it was originally documented in 1812, with the most recent update in 1994. There are currently 2 types of CRPS, although the symptoms and treatment options for both are similar.



CRPS is known for causing the highest rated pain on the McGill Pain Index (created at McGill University). It is ranked 42 out of 50, which is higher than childbirth, non terminal cancer, amputation of digit and everything else on the Index that causes pain.