Here is an excerpt about the "predisposing personality. It seems to explain the evolution of that idea related to CRPS...

Causes
Many hypotheses exist, but a definite cause has not been identified. (See Pathophysiology).

Older literature suggested that development of complex regional pain syndrome (CRPS) required a triad of conditions: an injury, an abnormal sympathetic response, and a predisposing personality. Most current literature disputes the need for an underlying personality disorder. In August 2000, Schwartzman stated, "There is no evidence that affected patients have a personality disorder, but the severity of pain and the disruption of the patient's life can lead to anxiety and depression."[25 ]Beerthuizen et al reviewed 31 articles that addressed an association between psychiatric illness and CRPS-1. Almost all the studies showed no causal relationship.[26 ]

So the final word is that we aren't necessarily a predisposing personality type, but can have problems related to the impact of CRPS and chronic pain in our lives.

The excerpt was from:
eMedicine Specialties > Emergency Medicine > Neurology
Complex Regional Pain Syndrome
Author: Steven J Parrill
Updated: Mar 23, 2010
http://emedicine.medscape.com/article/793370-overview