Some doctors call strokes “brain attacks” because they have a lot in common with heart attacks. A heart attack occurs when an artery that delivers blood to the heart’s muscle becomes blocked. Starved of oxygen- and nutrient-rich blood, the heart tissue begins to die. If treatment isn’t administered fast, the damage can spread and prove fatal.
Exchange a few words (namely brain for heart) and you are describing a stroke. Your brain, like your heart and the rest of your body, runs on the oxygen and nutrients delivered via the blood. The most common form of stroke occurs when a blood vessel in the brain becomes clogged.
A severe stroke can permanently destroy massive numbers of brain cells, resulting in paralysis, speech difficulties, and even death. The sooner you get the help of a trained professional at a stroke center (go only to an ER that has a stroke center), the more brain you are likely to save.