If you have ever had an unusual behavior or experience during your sleep, you may wonder: what are parasomnias? From the Latin meaning “around sleep”, parasomnias are a collection of sleep disorders that are characterized by abnormal actions or events that occur during sleep. What are the symptoms, causes, and treatments of the sleep behaviors called parasomnias? Discover how these conditions like sleepwalking, talking, eating, sleep terrors, and REM behavior disorder affect children and adults.