PT - JOURNAL ARTICLE AU - Warren E. Lux AU - John F. Kurtzke TI - Is Parkinson's disease acquired? Evidence from a geographic comparison with multiple sclerosis AID - 10.1212/WNL.37.3.467 DP - 1987 Mar 01 TA - Neurology PG - 467--467 VI - 37 IP - 3 4099 - http://n.neurology.org/content/37/3/467.short 4100 - http://n.neurology.org/content/37/3/467.full SO - Neurology1987 Mar 01; 37 AB - In the coterminous United States, MS mortality rates demonstrate a north-south gradient, which is confirmed by more sophisticated—and more expensive—prevalence studies. Mortality rates from idiopathic Parkinson's disease show a similar north-south gradient, and they correlate significantly with the MS mortality and prevalence data. This demonstration that Parkinson's disease may be place-related provides support for the hypothesis that Parkinson's disease, like MS, is an acquired, environmental illness.