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Published on: September 12, 2020
[Paroxysmal focal dystonia as the initial manifestation of multiple sclerosis: case report]
Jolanta Florczak1, Wojciech Kozubski
1Katedra i Klinika Neurologii AM w Poznaniu. jolaflorczak@op.pl
Abstract:
Paroxysmal phenomena such as dystonia in multiple sclerosis (MS) have approximate incidence ranged between 3.8%-17%. These symptoms in MS may represent transient phenomena related to inflammation in acute plaques and probably are secondary to irritation of demyelinated axons by lymphokines. Paroxysmal dystonia can occur at any time during the course of MS, but usually is the initial manifestation of demyelinating disease. We present the case of 42-year old woman with paroxysmal dystonia as the initial symptom of MS. Further MRI studies and CSF analysis revealed findings typical for MS. Patient's neurological status improved temporary after methyloprednisolone therapy. Paroxysmal dystonia may be related to ectopic impulses, release of inflammatory soluble factors, dysfunction of ion channels and accumulation of extra-cellular potassium. Paroxysmal dystonia often causes diagnostic difficulties, especially when it is the only or the initial symptom of the disease. It requires differential diagnosis with other diseases of central nervous system such as epilepsy and neurodegenerative or inflammation pathology.
Insights
Paroxysmal dystonia, a rare symptom of multiple sclerosis (MS), can be the first sign of this neurological disease. Early diagnosis is crucial for managing MS symptoms effectively.
Area of Science:
- Neurology
- Neuroimmunology
Background:
- Paroxysmal dystonia is an uncommon symptom in multiple sclerosis (MS), with reported incidence between 3.8%-17%.
- These transient neurological phenomena are thought to arise from inflammation in acute MS plaques, potentially irritating demyelinated axons.
Observation:
- This case study details a 42-year-old woman presenting with paroxysmal dystonia as her initial symptom of MS.
- Her diagnosis was confirmed through Magnetic Resonance Imaging (MRI) and cerebrospinal fluid (CSF) analysis, revealing findings characteristic of MS.
- Neurological status showed temporary improvement following methylprednisolone treatment.
Findings:
- Paroxysmal dystonia in MS may stem from ectopic impulses, inflammatory factors, ion channel dysfunction, or extracellular potassium accumulation.
- The symptom can present diagnostic challenges, particularly when it is the sole or initial manifestation of the disease.
Implications:
- Paroxysmal dystonia necessitates careful differential diagnosis, distinguishing it from other central nervous system disorders like epilepsy or other inflammatory/neurodegenerative conditions.
- Recognizing paroxysmal dystonia as a potential early MS symptom can aid in timely diagnosis and management.
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