TIA: It's an Emergency - WebMD

One in 20 people who suffers a transient ischemic attack -- TIA -- has a stroke within seven days, a new study confirms.

TIAs are like strokes except for one thing -- people fully recover from TIAs and there is no permanent brain damage. How dangerous are TIAs? Different studies have come up with different answers....

But when they lumped all major studies together, Giles and Rothwell find that a person who suffers a TIA has more than a one in 20 risk of having a stroke within one week. That drops to about a one in 100 risk if a person gets emergency care immediately after a TIA....