A few days before brain stem hemorrhage, a small number of patients may have the omens, which are as follows: yawning, blood pressure abnormality, nosebleed, consciousness disorder and so on. 1. Yawning: If there is brain stem hemorrhage, patients will often have frequent yawning caused by lack of oxygen in the brain, and if they still have frequent yawning even if they have enough sleep, they should pay attention to it. 2. Abnormal blood pressure: patients with brain stem hemorrhage will have abnormal blood pressure before the phenomenon, some people’s blood pressure even soared to 200mmHg. 3. Nosebleeds: nosebleeds may occur, and some of them are accompanied by symptoms such as hemorrhages in the fundus of the eye. 4. Transient consciousness disorder: patients may have transient consciousness disorder before brain stem hemorrhage. It should be noted that most of the patients with brain stem hemorrhage do not have warning signs, and the harm of this disease is greater, it is recommended to go to the hospital in time once there is physical abnormality.