TIA (Transient Ischemic Attack) is a temporary reduction or cessation of blood supply to the brain. When this happens, it usually results in a brief neurological dysfunction that usually lasts for less than 24 hours. Anybody can experience TIA at any time, and that is why transient ischemic attacks cannot be considered as a disease.
On the other hand, a stroke is a cardiovascular disease that occurs when the blood supply to the brain is suddenly interrupted, which usually leads to the loss of brain function. When blood vessels that supply blood and oxygen to the brain are damaged, the brain won't get the needed oxygen. If this happens to someone and adequate medical attention is not provided, it can lead to death.
Also, a stroke can cause paralysis. TIA is not a serious health condition compared to stroke since it doesn't occur up to 24 hours, whereas a stroke is a life-threatening disease.
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