What is Complex Regional Pain Syndrome? Is it only neurological?

CRPS is a disorder that causes lasting pain, usually in an arm or leg, and it shows up after an injury, stroke, or even heart attack. But the severity of pain is typically worse than the original injury itself. NOT only neurological, as it does have measurable symptoms: pain and swelling, usually of a distalextremity, accompanied by vasomotor instability, trophic skin changes, and the rapid development of bony demineralization.