Prevalence of amyotrophic lateral sclerosis in Texas, 1998-2003.

A prevalence study of amyotrophic lateral sclerosis (ALS) was conducted in 3 areas in Texas to enable the state health department to better respond to community concerns regarding the occurrence of ALS and to contribute to national prevalence estimates. The overall ALS point prevalence was lower than previously published US estimates. This study provides ALS prevalence estimates for Texas, including Hispanic populations.