Complex Regional Pain Syndrome (CRPS) has to be one of the most challenging conditions that we must address as PTs. There is now some evidence supporting the use of mirror therapy for this condition. For an excellent video on the topic, look up on YouTube, “David Butler Mirror Therapy”
Reference: Sayegh SA et al Mirror therapy for Complex Regional Pain Syndrome (CRPS)-A literature review and an illustrative case report. Scand J Pain. 2017 Dec 29;4(4):200-207.