Major or Mild Neurocognitive Disorder due to Parkinson's Disease

The prevalence of Parkinson's disease in the United States steadily increases with age.

Parkinson's disease is more common in males than in females.

Among individuals with Parkinson's disease, as many as 75% will develop a major NCD sometime in the course of their disease.

The prevalence of mild NCD in Parkinson's disease has been estimated at 27%.

The criteria are met for major or mild neurocognitive disorder.

The disturbance occurs in the setting of established Parkinson’s disease.

There is insidious onset and gradual progression of impairment.

The neurocognitive disorder is not attributable to another medical condition and is not better explained by another mental disorder.