• J. Neurol. Neurosurg. Psychiatr. · Mar 2023

    MRI lesions can often precede trigeminal neuralgia symptoms by years in multiple sclerosis.

    • Sonam Dilwali, Ian Mark, and Emmanuelle Waubant.
    • Department of Neuroimmunology, University of California System, San Francisco, California, USA sonam.dilwali@ucsf.edu.
    • J. Neurol. Neurosurg. Psychiatr. 2023 Mar 1; 94 (3): 189192189-192.

    BackgroundUnderstanding when multiple sclerosis (MS) lesions become clinically symptomatic may provide insight into disease pathophysiology. Our objective was to temporally associate lesion formation and trigeminal neuralgia (TN) symptom onset in MS.MethodsThis is a retrospective case series of patients with MS, analysing time difference between TN symptom onset and oldest MRI showing a correlative lesion.ResultsFor the 26 patients with MS, a correlative lesion was noted on MRI on average 5±4 years prior to TN symptom onset; 57% had primary or secondary progressive MS.ConclusionsTN lesions can be present years prior to symptom onset, suggestive of alternative explanations than typical relapses. This phenomenon may hint at alternative pathophysiology of progressive MS in comparison to relapsing-remitting MS.© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.

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