Continuing pain, which is disproportionate to any inciting event.
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Must report at least one symptom in three (‘clinical diagnostic criteria’) or four (‘research diagnostic criteria’) of the following categories:
Sensory: hyperesthesia and/or allodynia.
Vasomotor: temperature asymmetry and/or skin color changes and/or skin color asymmetry.
Sudomotor/edema: edema and/or sweating changes and/or sweating asymmetry.
Motor/trophic: decreased range of motion and/or motor dysfunction (weakness, tremor, dystonia) and/or trophic changes (hair, nails, skin).
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Must display at least one sign* at time of evaluation in two or more of the following categories:
Sensory: hyperalgesia (to pinprick) and/or allodynia (to light touch and/or deep somatic pressure and/or joint movement)
Vasomotor: temperature asymmetry and/or skin color changes and/or asymmetry
Sudomotor/edema: edema and/or sweating changes and/or sweating asymmetry
Motor/trophic: decreased range of motion and/or motor dysfunction (weakness, tremor, dystonia) and/or trophic changes (hair, nails, skin).
There is no other diagnosis that better explains the signs and symptoms.
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