Patients with subarachnoid hemorrhage typically exhibit persistent, severe headaches accompanied by projectile vomiting. Patients often experience symptoms of clouded consciousness, irritability, and anxiety. The most common cause of subarachnoid hemorrhage is the rupture of cerebral aneurysms, with blood entering the subarachnoid space, stimulating the pia mater and arachnoid membrane, and inducing severe headaches. This also leads to a rapid increase in intracranial pressure, causing projectile vomiting. Additionally, symptoms often include clouded consciousness and restlessness. Treatment requires complete bed rest for four to six weeks, using hemostatic, analgesic, and sedative medications to allow the patient to rest quietly. (Use specific medications only under the guidance of a doctor, and do not self-medicate.)