Sleeping nightmares are medically called nightmares, commonly known as nightmares, and refer to a dream experience characterized by terror and anxiety. The onset of nightmares may generally be related to psychiatric factors, such as mental stimulation during the day, or experiencing some horrific event, most notably in children, who hear scary stories or watch scary movies before going to bed, which may lead to nightmares. Some traumatic events that can easily lead to nightmares, such as experiencing an earthquake after which a family member or yourself was injured, people who have experienced war, or experienced the death of a loved one, are also prone to nightmares, especially those who have experienced war, and may have nightmares for a long time. There are also medications that can cause or exacerbate nightmares, such as anti-hypertensive medications, dopa-like medications, and anti-psychotic medications, all of which may induce nightmares. There are also specific personality traits, such as schizotypal personality disorder or paranoid personality disorder, that make them more prone to nightmares than normal people. There are also improper sleep positions, or physical discomfort, which can also induce nightmares. For example, if the chest is pressed during sleep, nightmares may occur in the dream because of the inability to breathe.