Parkinson's Disease Parkinson’s Patients Battle Sleep Disorders March 30, 2015 | Leave a Comment We all know that adequate sleep plays an important role in our health and ability to function effectively each day. But what you may not know is that sleep problems such as insomnia, excessive daytime sleepiness and nightmares may be an early sign of Parkinson’s disease (PD), even before motor symptoms have begun (National Sleep Foundation). Read more » Capital Area Parkinson's Society Parkinson's disease REM Sleep Behavior Disorder sleep disorders