Lacunar stroke is a type of cerebral infarction. It occurs due to long-term hypertension or other causes leading to arteriosclerosis in the small vessels inside the skull or other thrombus formations, leading to stroke. It is treatable, and the treatment is generally the same as for other types of strokes. Early on, depending on the patient’s condition, thrombolytic treatment can be chosen if it is within 4.5 hours from onset. However, if the symptoms are mild, the benefits and risks should be weighed. Treatment may also include antiplatelet therapy to improve circulation, lipid-lowering, and plaque stabilization. It is also necessary to tailor treatment to the individual patient and to further investigate whether there is significant narrowing of the vessels to guide prognosis.