Unfortunately, sleep disturbances are one of the most common non-motor symptoms of Parkinson’s Disease. People with Parkinson’s disease may experience sleep issues such as vivid dreams, nightmares, and even acting out dreams. These issues tend to progress with the disease. Parkinson’s disease can disrupt the brain’s natural sleep-wake cycle, which can cause these sleep problems. There are different reasons why these sleep problems happen, and few studies have been done to find effective treatments. On its own, sleep disturbances are not an indication of Parkinson’s disease. But if you do find yourself with more than a couple of the symptoms on this list, you should make an appointment with your healthcare provider.