Facts About Progressive Supranuclear Palsy...What is PSP?
Internet URL
http://www.psp.org/page/whatispsp 
Sponsoring Agency
Society for Progressive Supranuclear Palsy
Description
PSP is a rare, degenerative brain disorder related to Parkinson's disease. It strikes middle aged adults and the elderly, slightly more men than women and affects 6.4 in 100,000. Its cause remains a mystery and although there is no cure, symptoms can often be helped.