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Clinical and demographical characteristics of primary progressive multiple sclerosis in Isfahan, Iran
A H Maghzi1, M Etemadifar, M Saadatnia
1Medical School, Isfahan University of Medical Sciences, Isfahan, Iran. maghzi@edc.mui.ac.ir
Abstract:
Primary progressive multiple sclerosis (PPMS) is an uncommon form of multiple sclerosis (MS) in which the course of disease is progressive from onset. In a retrospective study amongst 1606 MS patients registered in Isfahan MS Society (IMSS) from April 2003 to 31 December 2005, 92 PPMS cases were identified. That means, the frequency of PPMS amongst all included MS patients would be 5.7% (95% CI: 6.7% and 4.7%). The mean expanded disability status scale (EDSS) for the group was 5.09 +/- 1.3. The commonest mode of presentation was motor disturbance in 55 (59.8%), other modes of presentation were, vertigo in 15 (16.3%), visual problems in 12 (13%), sensory disturbances in six (6.5%), and diplopia in four (4.3%). The current [corrected] existing symptoms were motor problems in all 92 (100%), cerebellar symptoms in 46 (50%), and cognitive impairment in only 6[corrected](6.5%). Interestingly, two (2%) were affected by poliomyelitis during childhood and presenting symptom in both was limb weakness. Primary progressive form of MS is less common in Persian population and some of the rates observed in PPMS patients differ from those in other regions, these differences may be due to different ethnicity of Persian patients or to geographical differences.
Insights
Primary progressive multiple sclerosis (PPMS) is rare in the Persian population, affecting 5.7% of MS patients. Motor disturbance was the most common initial symptom, present in all patients.
Area of Science:
- Neurology
- Immunology
Background:
- Primary progressive multiple sclerosis (PPMS) is a rare subtype of MS characterized by continuous neurological decline from disease onset.
- Understanding the prevalence and clinical characteristics of PPMS in diverse ethnic groups is crucial for accurate diagnosis and management.
Purpose of the Study:
- To determine the frequency of PPMS within the Iranian MS patient population.
- To describe the common modes of presentation and current symptoms in PPMS patients.
Main Methods:
- A retrospective study was conducted on 1606 MS patients registered with the Isfahan MS Society between April 2003 and December 2005.
- PPMS cases were identified, and their demographic and clinical data, including Expanded Disability Status Scale (EDSS) scores and presenting/current symptoms, were analyzed.
Main Results:
- 92 cases of PPMS were identified, representing 5.7% of the total MS patient cohort.
- The mean EDSS score was 5.09. Motor disturbance was the most frequent presenting symptom (59.8%), followed by vertigo (16.3%) and visual problems (13%).
- Motor problems were universal current symptoms (100%), with cerebellar symptoms (50%) and cognitive impairment (6.5%) also noted.
Conclusions:
- PPMS appears less common in the Persian population compared to other regions, with observed rates differing potentially due to ethnicity or geography.
- Motor disturbances are the predominant initial and ongoing clinical manifestation in this cohort of PPMS patients.
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