Lacunar stroke is caused by pathological changes in some small blood vessels inside our skull, due to long-term hypertension or other factors, such as diabetes or immune factors, leading to the occlusion of the vessel lumen and the formation of small infarct lesions. Therefore, when these lesions appear, there may be symptoms, or there may be no symptoms; however, regardless of the situation, the prognosis is generally good. It is also necessary to assess the blood vessels to see if there are any major vascular abnormalities. If major vascular abnormalities are present, it could still be dangerous. If the abnormalities are confined to small vessels, the prognosis is generally good.