[The prevalence of multiple sclerosis in the Alcoi Health district].

Introduction: The epidemiological studies done in Spain in recent years show higher figures for the prevalence of multiple sclerosis than before. Spain is therefore now in the area with a high risk of contracting the disease.

Objective: We have made a new study to confirm the current prevalence of the disorder in the Alcoi Health District.

[Multiple sclerosis incidence in the Alcoi Health district. 12-year-long study (1986-1997)].

Introduction: To date, epidemiological studies on multiple sclerosis in Spain have been basically prevalence studies, and the data on incidence recorded have been the result of different methodologies, with no definition of the criteria for inclusion.

Objective: To carry out a study of incidence with prospective collection/review of cases over a prolonged period of time.

Patients And Methods: Over 12 years, between 1 March 1986 and 31 December 1997, we collected data prospectively for patients with a definite diagnosis of multiple sclerosis.