Prodrome in relapsing-remitting and primary progressive multiple sclerosis.

Abstract:

BACKGROUND AND PURPOSE:The multiple sclerosis prodrome remains poorly understood. We aimed to examine the prodrome in people with relapsing remitting multiple sclerosis at onset (RMS) and primary progressive multiple sclerosis (PPMS). METHODS:We conducted a matched cohort study using clinical and linked health administrative data in two Canadian provinces. We identified people with RMS, PPMS and age- sex- and geographically-matched population controls, and compared the number of physician encounters (total number, per International Classification of Diseases chapter, and per physician speciality) in the five years before symptom onset. Negative binomial regression models were sex, age, socioeconomic status and calendar year adjusted. RESULTS:We identified 1887 RMS, 171 PPMS cases, and 9837 matched population controls. No difference existed in the total number of encounters in the five years before index between RMS and PPMS, or between the phenotypes and their respective controls. Compared to RMS cases, PPMS cases had more nervous system-related encounters (adjusted rate ratio, 3.00; 95% confidence interval, 1.06-8.49) and fewer encounters with dermatologists (adjusted rate ratio 0.53; 95% confidence interval, 0.30-0.96). CONCLUSION:Findings suggest that people with RMS and PPMS may both experience a prodrome, although aspects may differ.

journal_name

Eur J Neurol

authors

Wijnands JMA,Zhu F,Kingwell E,Zhao Y,Evans C,Fisk JD,Marrie RA,Tremlett H

doi

10.1111/ene.13925

subject

Has Abstract

pub_date

2019-07-01 00:00:00

pages

1032-1036

issue

7

eissn

1351-5101

issn

1468-1331

journal_volume

26

pub_type

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