Nightmares refer to dream experiences that occur during the dreaming period and are characterized by terror and anxiety. Frequent nightmares may be related to specific personality traits, such as schizophrenia or paranoid personality disorder, and may be related to psychological factors such as mental stimulation, experiencing horrific life events, most commonly children who listen to scary stories or watch scary TV before going to bed, are prone to nightmares at night. People who have been traumatized, such as those who have experienced earthquakes, especially those who have lost loved ones or have been injured in earthquakes or have experienced wars, are prone to frequent nightmares. There are also drugs that can cause nightmares, such as dopa drugs, antipsychotics, and drugs for high blood pressure. Bad sleep position or uncomfortable body conditions can also induce nightmares, such as sleeping with something pressed against the chest, the person may have a feeling of breathlessness in the dream, which can also induce the appearance of nightmares.