neurosarcoidosis

[nur′ō-sär′koi-dōsĭs]
n.
  1. A granulomatous disease of unknown cause involving the central nervous system, usually with concomitant systemic involvement.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.