Could bright light fix Parkinson's sleep troubles?

NCT ID NCT02909192

Ongoing Symptom relief Sponsor: Massachusetts General Hospital Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether bright light therapy can help with sleep and alertness issues in people with Parkinson's disease. Researchers will measure sleep quality, daytime sleepiness, and other non-motor symptoms in 65 participants. The goal is to see if light exposure can improve the body's internal clock and reduce these disabling symptoms.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Light therapy device
What this could lead to: If it works, this could offer a simple, drug-free way to improve sleep and daytime alertness for people with Parkinson's disease.
What could go wrong: This is a small, early-stage study with only 65 participants. The results may not apply to everyone, and bright light therapy might not work for all sleep problems in Parkinson's.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for PARKINSON'S DISEASE are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

Disorders of Excessive Somnolence Parkinson disease

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

PARKINSON'S DISEASE

Contacts and locations

Locations

Massachusetts General Hospital

Boston, Massachusetts, 02114, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.