What are subtypes of complex regional pain?

Type I (the form also known as reflex sympathetic dystrophy) corresponds to patients with CRPS without evidence of peripheral nerve injury and represents about 90 percent of clinical presentations. Type II was formerly termed causalgia and refers to cases in which peripheral nerve injury is present. • "warm" and "cold" subtypes of CRPS • "Warm" CRPS is distinguished by increased skin temperature at the onset of symptoms, further suggesting this as an inflammatory type • "Cold" CRPS is differentiated by decreased skin temperature at the onset of symptoms