Complex regional pain syndrome is characterized by:
A) Repetitious dermatome pain attacks
B) Trigeminal neuralgia with facial tics
C) Severe limb pain after amputation
D) Disproportionate pain with mobility
Ans: D
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Complex regional pain syndrome is a rare disorder of the extremities characterized by autonomic and vasomotor instability. Most persons with the disorder have had an identifiable inciting or irritating injury, which may be trivial, such as a minor joint sprain, or severe, such as trauma involving a major nerve or nerves. The IASP lists the diagnostic criteria of CRPS I as the presence of an initiating traumatic event, continuing pain, allodynia (perception of pain from a nonpainful stimulus), or hyperalgesia disproportionate to the inciting event with evidence at some time of edema, changes in skin blood flow, or abnormal sensorimotor activity in the area of pain. The hallmark is pain and mobility problems more severe than the injury warrants. Neuralgia is characterized by severe, brief, often repetitiously occurring attacks of lightning-like pain that occurs along the distribution of a spinal or cranial nerve. Trigeminal neuralgia is manifested by facial tics or grimaces. Phantom limb pain, a neurologic pain, can occur after amputation of a limb or part of a limb.
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