Anal sphincter EMG does not distinguish between multiple system atrophy and Parkinson's disease.

@article{Giladi2000AnalSE,
  title={Anal sphincter EMG does not distinguish between multiple system atrophy and Parkinson's disease.},
  author={Nir Giladi and Ely Samuel Simon and Amos D. Korczyn and Galina B Groozman and Y. Orlov and Hertzel Shabtai and Vivian Drory},
  journal={Muscle & nerve},
  year={2000},
  volume={23 5},
  pages={731-4}
}
Clinical distinction of multiple system atrophy (MSA) from Parkinson's disease (PD) is often difficult. Several recent reports indicate that objective classification may be accomplished using electromyographic (EMG) testing of the anal or urethral sphincters, but some authors have found that these tests are not reliable for this purpose. We studied 13 patients with PD and 10 with probable MSA, as diagnosed by consensus of four movement disorders specialists, according to accepted clinical… CONTINUE READING

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