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Updated: Apr 24, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
Published on: December 9, 2015
Site-specific clinical disease onset in multiple sclerosis.
M D Willis1, K E Harding, M Wardle
1Institute of Psychological Medicine and Clinical Neuroscience, Cardiff University, University Hospital of Wales, Heath Park, Cardiff, UK.
Multiple sclerosis relapses may not be random. The location and symptoms of a patient's first multiple sclerosis (MS) relapse depend on the initial event, offering insights into disease progression.
Area of Science:
- Neurology
- Immunology
- Neuroscience
Background:
- Multiple sclerosis is a chronic CNS inflammatory disorder.
- Characterized by demyelination and neurological dysfunction.
- Symptomatic relapses are typically viewed as random events.
Purpose of the Study:
- Investigate if multiple sclerosis relapses follow a predetermined sequence.
- Explore if relapses offer insights into pathological processes.
- Analyze the relationship between index events and subsequent relapses.
Main Methods:
- Prospective clinical database analysis of 1482 patients.
- Inclusion of patients with one or more consecutive relapses.
- Regression analysis comparing index event characteristics with first relapse.
Main Results:
- Subsequent relapses are dependent on the index event characteristics.
- Anatomical sites involved in the index event are more likely to be affected in the first relapse.
- Similar associations observed when comparing by symptoms.
Conclusions:
- Findings are crucial for understanding multiple sclerosis evolution.
- Predicting individual disease progression may be enhanced.
- Aids in patient counseling and management strategies.
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