Author | Matthew A. Menza, MD

Articles

Psychiatric Symptoms Associated With Parkinson Disease

March 07, 2010

Article

Parkinson disease (PD) is the second most common neurodegenerative illness in the United States, affecting more than 1 million persons. Disease onset is usually after age 50. In persons older than 70 years, the prevalence is 1.5% to 2.5%.1 While the primary pathology involves degeneration of dopaminergic neurons in the substantia nigra, circuits important in emotion and cognition-such as the serotonergic, adrenergic, cholinergic, and frontal dopaminergic pathways-are also variably disrupted.

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