Lacunar stroke is a type of cerebral stroke characterized by lesions smaller than 1.5 cm in diameter. Often, these can be discovered incidentally on a CT or MRI scan in asymptomatic patients. In such cases, it's important to evaluate whether the patient has risk factors such as hypertension or diabetes, and consider the patient's age, smoking, and drinking habits. Further assessments with cranial MRI angiography or other vascular imaging are recommended to clarify the state of the blood vessels and guide treatment. Additionally, some patients may experience an acute onset with symptoms like slurred speech or limb weakness. Although these symptoms might be mild, it is crucial to seek prompt medical attention to assess the blood vessels and guide further treatment based on the physician's physical examination of the patient.