When the River to the Brain Runs Dry

A cerebrovascular accident, commonly called a stroke, occurs when blood flow to part of the brain is interrupted or when a blood vessel suddenly bleeds. An ischemic stroke happens when a clot or severe narrowing blocks an artery supplying the brain. Without oxygen and nutrients, brain cells can begin dying within minutes.

The effects depend on where the blockage occurs. A clot affecting an artery responsible for movement may weaken or paralyze one side of the body. A blockage in a language center may steal the ability to speak or understand words. Interrupted circulation to the visual areas may produce sudden blindness or distorted vision. The middle cerebral artery supplies important regions involved in movement, sensation, and language and is commonly affected in stroke.

This is the frightening truth of stroke: the person may still be awake, but pieces of ordinary life can begin disappearing—speech, balance, strength, memory, vision, independence, and sometimes life itself.

The “Mini-Stroke” Is a Major Warning

A transient ischemic attack, or TIA, is sometimes called a “mini-stroke.” The name can make it sound harmless, but it is not. A TIA occurs when blood flow to part of the brain is temporarily interrupted. The symptoms may disappear after several minutes or hours, but there is no reliable way at the beginning to know whether the event is a TIA or a major stroke. Both require immediate emergency care.

A TIA is the body’s alarm bell. The CDC reports that the risk of stroke within 90 days after a TIA may be as high as 17%, with the greatest danger occurring during the first week.

Never wait for the symptoms to return. Never dismiss them because they disappeared.

Recognize Stroke: B.E. F.A.S.T.

Stroke symptoms usually appear suddenly:

B — Balance: Sudden dizziness, stumbling, or loss of coordination.

E — Eyes: Sudden blurred, double, or lost vision.

F — Face: One side of the face droops or becomes numb.

A — Arm: One arm becomes weak, numb, or drifts downward.

S — Speech: Words become slurred, confused, or difficult to understand.

T — Time: Call 911 immediately and note when the person was last known to be well.

Other warnings include sudden weakness or numbness on one side, sudden confusion, difficulty walking, or a severe headache with no known cause.

Do not drive the person to the hospital unless emergency services are unavailable. Calling 911 allows treatment to begin during transport and alerts the hospital that a potential stroke patient is arriving.

Treatment: Every Minute Protects the Brain

Hospital teams use examinations and imaging, often including CT or MRI scans, to determine whether a stroke was caused by a clot or bleeding. This distinction is essential because the treatments are different.

For eligible ischemic-stroke patients, clot-dissolving medication may restore circulation. Certain large clots may be physically removed through a catheter procedure called mechanical thrombectomy. These treatments depend heavily on how quickly the patient reaches specialized medical care.

Never give aspirin during a suspected stroke unless emergency professionals instruct you to do so. Aspirin may help with some clot-related conditions, but it can worsen a bleeding stroke.