Defining the course of neurosarcoidosis according to presentation at onset and disease modifying treatment: a cohort study of 84 patients.

"The authors declare that there is no conflict of interest."

"Funding: The authors received no financial support for the research, authorship, and/or publication of this article."

"Ethics approval and consent to participate: Every patient has been informed of the possible use of its medical data for research purposes according to the French legislation about non-interventional studies. This research has been registered under the name NEUROSARC and the number 2020PI207 with the local research Institutional Board of the Nancy University Hospital, in accordance with the ethical recommendations of the French National Commission for Data Protection and Liberties (CNIL) (methodologie de reference MR 004) about this retrospective chart review wherein all data were previously generated as a part of routine clinical care."