PT - JOURNAL ARTICLE AU - James D Triplett AU - Katherine A Buzzard AU - Michal Lubomski AU - D Sean Riminton AU - Michael H Barnett AU - Miriam S Welgampola AU - G Michael Halmagyi AU - MaiAnh Nguyen AU - Klara Landau AU - Andrew G Lee AU - Gordon T Plant AU - Clare L Fraser AU - Stephen W Reddel AU - Todd A Hardy TI - Immune-mediated conditions affecting the brain, eye and ear (BEE syndromes) AID - 10.1136/jnnp-2018-319002 DP - 2019 Mar 09 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - jnnp-2018-319002 4099 - http://jnnp.bmj.com/content/early/2019/03/08/jnnp-2018-319002.short 4100 - http://jnnp.bmj.com/content/early/2019/03/08/jnnp-2018-319002.full AB - The triad of central nervous system symptoms, visual disturbance and hearing impairment is an oft-encountered clinical scenario. A number of immune-mediated diseases should be considered among the differential diagnoses including: Susac syndrome, Cogan syndrome or Vogt-Koyanagi-Harada disease; demyelinating conditions such as multiple sclerosis or neuromyelitis optica spectrum disorder; systemic diseases such as systemic lupus erythematosus, Sjögren syndrome or Behcet disease and granulomatous diseases such as sarcoidosis. In this article, we coin the term ‘BEE syndromes’ to draw attention to the various immune-mediated diseases that affect the brain, eye and ear. We present common disease manifestations and identify key clinical and investigation features.