Epidemiological study of multiple sclerosis in La Rioja

Area of Science:

• Neurology
• Epidemiology
• Public Health

Background:

• Multiple sclerosis (MS) is a debilitating demyelinating disease disproportionately affecting younger populations.
• Epidemiological studies consistently show variable MS prevalence across different regions.
• Understanding regional MS prevalence is crucial for resource allocation and public health strategies.

Purpose of the Study:

• To determine the prevalence and incidence of multiple sclerosis (MS) in La Rioja, Spain.
• To analyze MS patient data concerning age, sex, disease progression, and treatment.
• To investigate associations with cancer history and familial MS occurrences.

Main Methods:

• A 10-year retrospective analysis (2001-2011) of MS patients in La Rioja.
• Data collection involved hospital records, MS associations, and neurologist-maintained patient data.
• Diagnosis confirmation utilized Poser criteria or the 2005 McDonald criteria.

Main Results:

• MS prevalence in La Rioja was 65/100,000 inhabitants, with an incidence of 3.5/100,000 annually.
• Relapsing-remitting MS constituted 67.6% of cases, with a mean onset age of 20-29 years.
• 47.6% of patients remained untreated; interferon was the most common disease-modifying therapy.

Conclusions:

• MS prevalence and incidence in La Rioja align with national averages.
• Primary progressive MS onset appears slightly later in this cohort compared to literature.
• Familial MS cases may exhibit increased aggressiveness, underscoring the need for comprehensive epidemiological research.