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April 24, 2002

Sudden-Onset Sleep in Parkinson Disease

Author Affiliations

Stephen J.LurieMD, PhD, Senior EditorIndividualAuthor

JAMA. 2002;287(16):2076-2077. doi:10.1001/jama.287.16.2073

To the Editor: Dr Hobson and colleagues1 confirmed our preliminary finding2 that episodes of sudden sleep are rare in patients with Parkinson disease (PD). They reported that 16 of 420 patients reported sudden-onset sleep while driving. Three patients did not experience prodromal drowsiness or warning, and 2 events put drivers at risk. These numbers are similar to our estimate of an annual event incidence of 2%.