What is the role of evoked potential studies in the workup of neurosarcoidosis?

Updated: Nov 13, 2018
  • Author: Gabriel Bucurescu, MD, MS; Chief Editor: Tarakad S Ramachandran, MBBS, MBA, MPH, FAAN, FACP, FAHA, FRCP, FRCPC, FRS, LRCP, MRCP, MRCS  more...
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Answer

Evoked potential studies may be of value in supporting the diagnosis and in monitoring the course of the disease. Visual evoked potentials (VEPs) and brainstem auditory evoked potentials (BAEPs) tend to be abnormal in about one third of the patients with neurosarcoidosis.

Somatosensory evoked potentials tend to show abnormalities less frequently. All 3 modalities of EPs can show abnormalities in patients before the appearance of clinical signs.


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