Parasomnias are undesirable behaviors or experiences that occur during the transition from wakefulness to sleep, within sleep, or during arousals from sleep. These events are representative of central nervous system activation and can encompass abnormal sleep related movements, emotions, perceptions, dreaming, and complex behaviors. They are considered clinical disorders because of the resulting injuries, sleep disruption, adverse health effects, and untoward psychosocial ramifications. These behaviors can affect the patient, the bed partner, or both. There are a variety of treatment modalities and strategies available for parasomnias depending on the specific condition. Furthermore, parasomnias can infrequently be associated with underlying neurological disorders that are also amenable to treatment.