Treatments for the motor manifestations of Parkinson’s disease (PD) are well vetted and can dramatically alleviate symptoms such as tremor in many patients. But, while also common, non-motor symptoms—such as poor sleep—do not have the same abundance of tried and true therapeutic options.
A study suggests that light therapy may one day be added to the Parkinson’s disease treatment armamentarium, particularly for circadian sleep-related symptoms. The randomized, placebo-controlled study among 31 patients with PD found that the non-invasive and well-tolerated intervention improved excessive daytime sleepiness and lessened sleep fragmentation.

Parkinson’s PDF