Stroke includes ischemic stroke and hemorrhagic stroke. Ischemic stroke refers to cerebral infarction, while hemorrhagic stroke refers to cerebral hemorrhage. Symptoms such as limb weakness, slurred speech, or other neurological deficits should initially suggest the possibility of a stroke. Whether it is an ischemic or hemorrhagic stroke may be related to the symptoms, but a CT scan is essential. If a CT scan rules out cerebral hemorrhage, then cerebral infarction is more likely. The treatment varies with time; within 4.5 hours, if the conditions for thrombolytic therapy are met and there are no contraindications, and the relatives have signed an informed consent, thrombolytic treatment can be administered. If this time window is exceeded, this opportunity is lost, so it is crucial to seek medical attention immediately upon symptom onset.