Prevalence of multiple sclerosis in Brazil: A systematic review.

Epidemiological studies of multiple sclerosis (MS) conducted in Latin America have revealed prevalence rates of this disease from low to medium. The aim of this study was to gather and analyze surveys on prevalence conducted in Brazil, noting its variability in different regions. Systematic review was held in electronic databases and manual search in abstracts concerning ECTRIMS, LACTRIMS and Brazilian Congress of Neurology.

Central Nervous System Idiopathic Inflammatory Demyelinating Disorders in South Americans: A Descriptive, Multicenter, Cross-Sectional Study.

The idiopathic inflammatory demyelinating disease (IIDD) spectrum has been investigated among different populations, and the results have indicated a low relative frequency of neuromyelitis optica (NMO) among multiple sclerosis (MS) cases in whites (1.2%-1.5%), increasing in Mestizos (8%) and Africans (15.