There are more reasons for nightmares, as follows; 1. Confirm whether you are frightened during the day; 2. Excessive psychological pressure; 3. Pressing your hand against your heart while sleeping can produce chest tightness and nightmares; 4. Some drugs can cause breathing difficulties, leading to nightmares; 5. Precursors of mental illness. Many patients with schizophrenia usually have poor sleep quality before the onset of the disease and have nightmares all the time. It is necessary to seek the help of a professional psychiatrist. If you often have nightmares, the solutions are as follows: 1, learn to rest and release stress, i.e., combine work and rest; 2, check your sleep posture, if your hand is on your chest, change your sleep posture; 3, if you are taking medication, find a doctor to adjust your medication to confirm whether it is caused by medication; 4, after the above examination still does not improve, you should seek help from a psychiatrist or psychiatrist to check whether there are other mental problems. Relaxation medications are available to increase the number of sleeping pills or brain-supplementing and tranquilizing drugs, together with psychotherapy and relaxation training.