Persistence of pain induced by startle and forehead cooling after sympathetic blockade in patients with complex regional pain syndrome.

@article{Drummond2004PersistenceOP,
  title={Persistence of pain induced by startle and forehead cooling after sympathetic blockade in patients with complex regional pain syndrome.},
  author={Peter D. Drummond and Phillip M Finch},
  journal={Journal of neurology, neurosurgery, and psychiatry},
  year={2004},
  volume={75 1},
  pages={98-102}
}
BACKGROUND Stimuli arousing sympathetic activity can increase ratings of clinical pain in patients with complex regional pain syndrome (CRPS). OBJECTIVE To determine whether the increase in pain is mediated by peripheral sympathetic activity. METHODS The effect of sympathetic ganglion blockade on pain evoked by a startle stimulus and cooling the forehead was investigated in 36 CRPS patients. RESULTS Loss of vasoconstrictor reflexes and warming of the limb indicated that sympathetic… CONTINUE READING