Definition of CRPS:
(1) array of painful conditions that shows a variable progression over time
(2) pain is regional and not in a specific nerve territory or dermatome
(3) pain may be spontaneous and/or evoked
(4) evoked pain is disproportionate in time and/or degree to the inciting event
(5) pain shows a distal predominance with abnormal sensory, vasomotor, sudomotor, motor or trophic findings
Criteria - all 4 of the following:
(1) continuing pain, out of proportion to any inciting event
(2) reports >= 1 symptom in >= 3 categories (below)
(3) presence of >= 1 sign in >= 2 categories (below) at the the time of evaluation
(4) exclusion of alternative diagnosis that can explain the findings better
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Category
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Item 1
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Item 2
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Item 3
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sensory
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hyperesthesia, hyperalgesia (to pinprick)
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allodynia
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NA
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|
vasomotor
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temperature asymmetry (> 1°C)
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skin color changes
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skin color asymmetry
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sudomotor, edema
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edema
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sweating changes
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sweating asymmetry
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motor, trophic
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decreased range of motion
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motor dysfunction (weakness, tremor, dystonia)
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trophic changes in skin, nails and/or hair
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where:
• Allodynia may be in response to light touch, temperature sensation, deep somatic pressure, and/or joint movement.
