Stroke and TIA

AAbout Your Diagnosis and ED Workup

Most strokes happen when a clot blocks an artery feeding the brain. Other strokes happen when a blood vessel breaks and bleeds. Symptoms alone cannot reliably separate the two types. Brain imaging is needed.

When blood flow stops, one area of brain can die within minutes. Around it is a threatened area. It has stopped working but may still be alive. Restoring blood flow can save that tissue. This is why fast treatment may improve sudden weakness, speech trouble, or vision loss.

A TIA is a temporary blockage. Symptoms stop because blood flow returns before permanent injury is completed. The source of the blockage may still be present. Feeling normal again is not an all-clear.

A non-contrast CT is the first scan because it finds brain bleeding well. During the first three hours it detects only about 47% to 53% of acute ischemic strokes. A normal CT does not exclude an early, small, back-of-the-brain stroke, or a TIA.

The ABCD² score is sometimes used to describe TIA risk. It can miss important problems and back-of-the-brain symptoms. About 20% of people labeled low-risk have serious findings. It is not a self-diagnosis tool. Current NICE guidance treats every suspected TIA as high risk. It calls for evaluation within 24 hours.

FFirst Steps and Evidence-Based Home Care

1. Follow the medicine plan exactly as written

Stroke-prevention treatment depends on the cause. Some patients need antiplatelet medicine. Some need a blood thinner for atrial fibrillation. Others need treatment of blood pressure, cholesterol, or a narrowed neck artery. This page cannot choose or change that plan for an individual.

2. Keep the urgent follow-up pathway moving

Suspected TIA needs evaluation within 24 hours. A rapid-access TIA clinic provides follow-up specialist care within 48 hours. The note supports hospital care when that pathway is not available or travel is a barrier. New or returning symptoms need emergency evaluation now. Do not wait for the clinic visit.

3. Keep rehabilitation appointments

Most functional improvement occurs during the first three months. Motor recovery often peaks around four to six months with rehabilitation, and progress can continue through adaptation. Follow the activity and therapy plan made for you.

TTimeline and Expected Recovery Course

After a TIA, stroke risk is highest early. The 90-day risk is up to 17.8%. Nearly half occurs in the first two days. Urgent evaluation and treatment can reduce that risk by as much as 80%.

After a stroke, the largest functional gains usually occur in the first three months. Movement recovery often peaks around four to six months with rehabilitation. Recovery does not necessarily stop when formal rehabilitation ends; continued remodeling and adaptation can still help.

Recovery is not uniform. The amount of threatened brain differs between people. So does the speed of permanent injury. Collateral blood flow causes much of this difference. A late arrival should not assume treatment or recovery is pointless. Some patients still have salvageable tissue many hours after symptoms begin.

EEmergency Red Flags: Return Immediately

Return to the emergency department immediately for any sudden:

• Balance loss, dizziness, or trouble walking.
• Eye or vision change in one or both eyes.
• Face droop.
• Arm or leg weakness or numbness.
• Speech trouble, confusion, or trouble understanding words.
• Severe headache, especially if it is sudden.
• Any symptom like the first event, even if it lasts only a few minutes or goes away.

This list does not cover everything. If a new sudden neurologic problem appears, return to the emergency department. Do not wait, drive yourself, or sleep to see whether it passes.