Dreams are a normal human physiological phenomenon that accompanies people throughout their lives, and they occur whenever they sleep. Dreams are a kind of mood created by combining various pieces of information stored in our body and brain during sleep. A nightmare is a feeling of palpitations caused by the contents of a dream during sleep, or a feeling of not being able to move after waking up, or feeling that something is pressing on our body, and we cannot move or shout if we want to. But consciousness, commonly known as ghost pressure. However, this is not related to ghosts and monsters, but is a normal psychological phenomenon. Normal people can have nightmares occasionally, but if they occur frequently, it indicates the possibility of sleep disorders. The main causes of nightmares include three kinds: 1, emotions, such as excessive excitement during the day, excessive emotional fluctuations or excessive fatigue, abnormal rest and rest, insomnia, etc., and some psychological stress leading to anxiety, depression; 2, sleep ischemia and lack of oxygen in the brain, such as physical weakness, excessive fear, or taking certain drugs leading to hypotension, and pillow too high; 3, drinking alcohol, alcohol has a rapid eye movement period The brain needs to make up for the rapid eye movement period after the alcohol effect disappears, leading to continuous dreaming and an increased chance of nightmares. 4. sleeping in an abnormal position, such as putting your hand on your chest, pressing on your chest, feeling breathless and triggering nightmares. Generally the nightmare can continue to sleep after the attack and will not bring serious consequences. If you have frequent nightmares for a long time, you need to pay attention to them. You can take care of the following aspects: 1. Weaving beautiful dreams, as far as possible to recall the dream episode, weaving a happy ending to the dream, to relieve psychological pressure; 2. Guiding method, before going to bed, you can bend the thumbs of both hands, the other four fingers to hold the thumbs in a fist, and persist for a long time; 3. Medication, according to the theory of Chinese medicine diagnosis and treatment, you can also choose sedative drugs to take orally.