are a widely cited set of guidelines formulated by an expert committee in 2001 [8]. The McDonald criteria, as
revised in 2005 [8,9], attempt to formalize a means to incorporate clinical symptoms, imaging, and tests in the diagnosis of MS."
Since this opinion (by one hospital neurology resident) was written in 2006, the Mcdonald criteria has been revised again, basically tweeked to fix the dx's issues seen in the clinics. Its now suppose to be clearer but that imho remains to be seen.