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McDonald Criteria MS often misapplied and misunderstood

Conference
AAN 2019
Neurology residents and, to a lesser degree, MS specialists from the USA and Canada often incorrectly apply core components of the McDonald diagnostic criteria for MS [1]. Researchers suggest education may reduce misdiagnosis by concentrating on misinterpreted and misapplied components of the criteria. A web-based survey was designed in which 72 neurology residents and 88 MS specialists from the USA and Canada partook. MS atypical syndromes that were incorrectly identified as typical by residents and MS specialists, respectively, were complete transverse myelopathy (by 35% and 15%); intractable vomiting/nausea/hiccups (20% and 5%); and bilateral optic neuritis/unilateral optic neuritis with poor visual recovery (17% and 10%). “Touch or abutting” the ventricle criterion for periventricular lesions was correctly identified by 38% of residents and 61% of MS specialists; “juxtacortical” by 19% and 54%. Optic nerve involvement was incorrectly seen as a region t...


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