TIA and ischemic stroke share a common cause. Both result from a disruption in blood flow to the central nervous system. In ischemic stroke, symptoms generally persist beyond seven days. In TIA, symptoms typically resolve within one hour. The occurrence of a TIA is a risk factor for eventually having a stroke. Both are associated with increased risk of death or disability. Recognition that a TIA has occurred is an opportunity to start treatment, including medications and lifestyle changes, to prevent a stroke.