The epidemiology of PSP

摘要: The age-adjusted prevalence of PSP as measured in central New Jersey is 1.5 cases per million population, about 1% that Parkinson's disease. It incidence 3-4 new population year, similar to such better-known illnesses myasthenia gravis, the hereditary ataxias a group and Tourette syndrome. Median actuarially adjusted survival after symptom onset 5.9-6.9 years. appears favor no geographical, racial, ethnic or occupational group, though there anecdotal evidence for hydrocarbon exposure candidate etiologic factor. No familial typical have been proven. one formal case-control study failed implicate any particular causal agent rural predilection PD be absent PSP. Better diagnostic methods, more multi-center organization, additional studies hypotheses are needed epidemiological investigation