More recently, trigeminal nerve lesions related to multiple sclerosis found much attention.
In contrast, scarcely a report has focused on how MS affects posterior or anterior spinal nerve roots.
In the pre-MRI era, however, several post-mortem studies described how MS damages the spinal cord's nerve roots.
Please check Huber Oscar's Berlin thesis of 1894 "Zur pathologischen Anatomie der multiple Sklerose des Rückenmarks" and
Falkiewicz Tadeusz's paper "Zur Pathogenese der multiplen Sklerose" (Arb Neurol Inst Wien, 1926; 28:172)
Who seem to have given the best topical accounts.
Overcoming the given dilemma might help understand the disease process.
(Apart from exploring the MS-related periphlebitis retinae in closer detail)