People with Parkinson’s disease may experience sensory misperceptions (hallucinations or illusions) or false beliefs (delusions). These tend to occur more in the later stages of the disease, and they can be mild and non-threatening or severe. Dr. Martha Nance, director of the Parkinson’s Foundation Center of Excellence at the Struthers Parkinson’s Center in Minneapolis, explains the causes of these symptoms, gives examples of how people with Parkinson’s might experience them and discusses coping mechanisms and considerations for medical management. The most important step in dealing with these phenomena? Talk about it.