Table 3 Budapest clinical diagnostic criteria for CRPS [53]

All the following criteria must be met:

1) Continuing pain, which is disproportionate to any inciting event.

2) Must report at least one symptom in three of the four following categories:

 • Sensory: Reports of hyperesthesia and/or allodynia.

 • Vasomotor: Reports of temperature asymmetry and/or skin color changes and/or skin color asymmetry.

 • Sudomotor/Edema: Reports of edema and/or sweating changes and/or sweating asymmetry.

 • Motor/Trophic: Reports of decreased range of motion and/or motor dysfunction (weakness, tremor, dystonia) and/or trophic changes (hair, nail, skin).

3) Must display at least one sign at time of evaluation in two or more of the following categories:

 • Sensory: Evidence of hyperalgesia (to pinprick) and/or allodynia (to light touch and/or temperature sensation and/or deep somatic pressure and/or joint movement).

 • Vasomotor: Evidence of temperature asymmetry (>1 °C) and/or skin color changes and/or asymmetry.

 • Sudomotor/Edema: Evidence of edema and/or sweating changes and/or sweating asymmetry.

 • Motor/Trophic: Evidence of decreased range of motion and/or motor dysfunction (weakness, tremor, dystonia) and/or trophic changes (hair, nail, skin).

4) There is no other diagnosis that better explains the signs and symptoms.