Brainstem hemorrhage is one of the most severe and dangerous diseases in neurology. If the amount of hemorrhage in the brainstem is very large, the patient may lose consciousness and quickly fall into a coma, or even suffer from respiratory failure, without any awareness and thus not experiencing obvious pain. However, if the amount of bleeding is small, it may not pose a life-threatening risk but could still cause paralysis of the limbs and impairments in speech function. The patient might be unable to eat orally, presenting significant difficulties in swallowing and coughing while drinking, necessitating the use of a feeding tube for administering food and water. Additionally, there may be dysfunction in urinary and bowel control. Therefore, patients with brainstem hemorrhage who are conscious tend to experience significant suffering. Some patients with very minor brainstem hemorrhages may only show mild hemiplegia and do not feel particularly distressed.