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Is the frequency of multiple sclerosis increasing in Mexico?
  1. O Gonzalez,
  2. J Sotelo
  1. Neuroimmunology Department, National Institute of Neurology and Neurosurgery of Mexico, Mexico, DF.


    Multiple sclerosis has steadily increased in Mexican mestizos from an apparently rare disorder in the 1970s to the second most frequent cause of admission to a neurology ward in the 1990s. Most patients belonged to high socioeconomic and educational groups. Familial incidence was low. Age at onset was younger than in other series and long term disability was milder than in patients from countries in which the disease is apparently more prevalent.

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