of sight.
### F — Face
One side of the face becomes weak or droops.
### A — Arms
One arm becomes weak or numb.
### S — Speech
Speech becomes slurred, strange, or difficult to understand.
### T — Time
Call emergency medical services immediately.
## Why Every Minute Matters
A stroke interrupts the brain’s blood supply. Without oxygen and nutrients, brain cells can begin to die within minutes.
Fast treatment can reduce brain damage and improve the likelihood of recovery. Some treatments are particularly time-sensitive, which is why waiting to see whether symptoms disappear can be dangerous.