Below are two amazing resources focusing on diagnosing CRPS.

The first is from Katie L. Aker and her descriptive article titled, CRPS Diagnosis: A review of diagnostic tools

Second, Dr. R. Norman Harden, a Professor of Physical Medicine and Rehabilitation at Northwestern University discusses utilizing the Budapest Criteria. Doctor Harden and Stephen Bruehl, Ph.D. were instrumental in validating the CRPS diagnostic criteria.