Table 1. Diagnostic Criteria for CRPS

Categories of Clinical Signs or Symptoms
Positive sensory abnormalities	Spontaneous pain
	Mechanical hyperalgesia
	Thermal hyperalgesia
	Deep somatic hyperalgesia
Vascular abnormalities	Vasodilation
	Vasoconstriction
	Skin-temperature asymmetries
	Skin-colour changes
Oedema, sweating abnormalities	Swelling
	Hyperhidrosis
	Hypohidrosis
Motor (M) or trophic (T) changes	Motor weakness (M)
	Tremor (M)
	Dystonia (M)
	Coordination deficits (M)
	Nail or hair changes (T)
	Skin atrophy (T)
	Joint stiffness (T)
	Soft-tissue changes (T)

≥1 symptoms of ≥3 categories each AND ≥1 signs of ≥2 categories each can be diagnosed CRPS(Sensitivity: 0.85, Specificity:0.60).