What is the fine-grained topic of the following text: New Delhi, Feb 21, 2017: Transient ischemic attack or TIA or mini paralysis is a brief episode of neurologic dysfunction caused by lack of blood supply in the focal brain or eye, with clinical symptoms typically lasting less than one hour, and without evidence of acute infarction or brain attack. Only return the topic.
Transient Ischemic Attack (TIA) or Mini Paralysis