"Mini-stroke" refers to a temporary blockage in a blood vessel. it lasts only a few minutes. Here, a very small blood clot blocks the blood supply for a few minutes and then it goes off by itself. This is a warning. However, it is a medical emergency meaning that we need to call 911 immediately. The “mini-stroke” typically resolves within 24 hours; however, it can become a full-blown stroke if not attended.