TIA is the abbreviation of transient ischemic attack. A transient ischemic attack is a sudden and temporary interruption of blood flow in the blood vessels of the brain, causing symptoms of neurological deficits in the corresponding area. The duration of the attack varies from a few minutes to several minutes, and patients rarely exceed 24 hours, and it is a reversible neurological deficit. Symptoms may vary depending on the site of ischemia, and may include slurred speech, unfavorable limb movement, blurred vision, visual field loss, and dizziness, nausea, vomiting, and partial numbness of one limb. When a transient ischemic attack occurs, it should be treated promptly and may progress to cerebral infarction, and the development of cerebral infarction can be avoided by actively giving treatment.