What is progressive supranuclear palsy (PSP)?

Updated: Sep 24, 2018
  • Author: Stephen M Bloomfield, MD; Chief Editor: Selim R Benbadis, MD  more...
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Progressive supranuclear palsy (PSP) is reportedly the second most common cause of idiopathic parkinsonism. Generally, there is no family history and no strong genetic component is known in this idiopathic condition. However, some rare familial clusters have been reported. The disease usually begins when patients are in their 50s to mid 60s. However, the youngest autopsy-proven case began when the patient was 43 years old. Approximately one third of cases begin when the patient is younger than 60 years.

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