Nightmares can be said to be a normal psychological phenomenon, which has nothing to do with ghosts. Usually, it is more likely to happen under the conditions of great pressure, excessive fatigue, abnormal work and rest, insomnia and anxiety. Science shows that nightmares are caused by transient cerebral ischemia during sleep. When transient cerebral ischemia occurs during the day, people will have terrible symptoms such as dizziness, palpitation, chest tightness, black eyes, tinnitus and various neurological disorders.
Nightmares are partly caused by incorrect sleeping posture. For example, when sleeping, putting your hand on your chest and pressing your heart will make you feel breathless unconsciously, resulting in nightmares. Sleeping on your back and lying flat at the same time can also easily cause nightmares. Therefore, the sleeping position when sleeping is very important.
People who also have nightmares are under too much pressure. Generally, everyone will encounter nightmares in life. Don't be afraid. These are all normal situations. But if you often have nightmares, then you should pay attention. This may be a mental illness. It is best to consult a psychological counselor or psychiatrist.
Extended data:
Nightmares are common among children, most of whom are 3-7 years old.
Nightmares occur in rem sleep with dreams. Because REM sleep accounts for a high proportion of sleep in the second half of the night, nightmares are more likely to occur in the second half of the night. At that time, the heartbeat and breathing may be accelerated, but there will be no obvious spontaneous response. When children wake up from nightmares, they often cry and say they are afraid. Parents' comfort can calm them down and go back to sleep.
Avoid excessive excitement and fatigue during the day. Pay attention to arrange a reasonable life schedule and eliminate all kinds of factors that affect sleep uneasiness. You should avoid watching horror movies and listening to horror stories. Those with psychological pressure and physiological incentives should be treated symptomatically. After removing all kinds of factors that induce nightmares, they generally do not have frequent attacks. In addition, with the increase of age, the onset of nightmares will naturally decrease or stop.
Baidu encyclopedia-nightmare