The specific causes of cerebral infarction are mostly seen in older patients with several underlying diseases, such as hypertension, diabetes, and hyperlipidemia. Over time, without well-controlled blood pressure, blood sugar, and blood lipids, arteriosclerosis can easily form within the blood vessels, or atherosclerotic plaques can develop. Once the plaque forms, under certain triggers, the unstable detachment of the vascular plaque can occur. The embolus then moves with the blood flow into the brain and lodges in a narrowed part of the vessel, causing local blood supply areas to experience narrowing or blockage. At this point, a cerebral infarction is likely to form, leading to ischemia, necrosis, and degeneration of the brain tissue supplied by the vessel, resulting in a softening lesion. On a cranial CT scan and MRI, a local low-density shadow can be observed, which is the specific cause of the cerebral infarction.