Lacunar stroke is a type of small stroke that occurs within the brain due to the narrowing of small arteries. This narrowing is often caused by long-term hypertension or diabetes, among other risk factors, leading to the obstruction of these vessels. Some patients may not exhibit any symptoms, while others might experience mild symptoms. Regardless of the cause, both hypertension and diabetes have genetic components, suggesting that lacunar strokes are influenced by genetics but are not entirely hereditary. Furthermore, the specific location of a lacunar stroke within the brain determines the symptoms experienced, implying that the condition is not solely genetic but does have genetic factors.