Disseminated intracranial ischemic foci are abnormal signals that appear when an MRI is performed and some blood vessels inside the brain are found to be blocked, resulting in ischemia in multiple areas of brain tissue. Disseminated intracranial ischemic foci are due to occlusion, narrowing, or blockage of small blood vessels by foreign emboli, resulting in ischemia, hypoxia, and necrosis of the distal brain tissues they innervate, resulting in the formation of ischemic foci or cystic foci, which can be detected during an MRI examination. Hypertension, diabetes mellitus, hyperlipidemia often damage the arterial vessels, causing plaque to appear in the arterial vessels, and when the plaque is dislodged, it will form a thrombus to block the blood vessel, which will lead to ischemia of the brain tissues and the formation of ischemic foci. This may cause reactions such as dizziness, headache, nausea and vomiting. It is recommended to go to the hospital immediately in case of any discomfort.