2017 Volume 34 Issue 3 Pages 139-141
Recent epidemiological studies have shown the increases of neurological diseases. The progress of the treatment in neurological diseases, aging population and/or the progress of the health care system of intractable neurological diseases are contributing the increases. The door–to–door surveys in Japan clarified the prevalence rates and risk factors of some neurological diseases, such as dementia, parkinsonism, Parkinson's disease and mild parkinsonian signs. Here, we described the prevalence rates of these neurological diseases. In the near future, intervention studies of neurological diseases in Japan will progress more.