Nightmares can be a normal physiological reaction such as stress, pressure or overwork, or they can be caused by pathological factors such as anxiety disorders. 1. Physiological reactions: such as work, emotional life stress or mental overstress, or may be caused by overwork during the daytime after doing heavy physical work. It is recommended that patients relax themselves, relieve stress, and get enough sleep to alleviate the symptoms. 2. Pathological factors: total nightmares can also be seen in patients with anxiety and depression. For example, patients with anxiety disorder may have symptoms of psychological and physical disorders. When there are psychological symptoms, patients mainly show that they are overly worried that something is going to happen, and they may have anxiety, agitation, panic and fear. The causes of nightmares are more complex, and it is recommended that patients go to the hospital in time for examination, and give targeted treatment after clarifying the cause of the disease, so as to avoid adverse consequences.