What happens if a transient ischaemic attack is not treated?

A TIA briefly interrupts blood flow to part of the brain, so symptoms such as weakness on one side, numbness and tingling or slurred speech may disappear. The disappearance does not explain why the event happened. High blood pressure, atrial fibrillation and narrowing in blood vessels are possible contributors. Without assessment, an untreated cause can remain active, and a later stroke may leave lasting problems with movement, speech, vision or swallowing.

Treat any sudden stroke-like symptom as an emergency, even if it has resolved. Call emergency services and note when the symptom began and when it ended. Do not drive yourself. Doctors may check your heart rhythm, blood pressure, blood vessels and blood tests, then choose treatment such as blood-pressure medication or statin therapy when appropriate. Take prescribed medicines consistently and do not stop them without medical advice.

Call emergency services immediately for new weakness on one side, facial drooping, slurred speech, sudden numbness, loss of vision, severe imbalance or confusion. These signs need emergency assessment whether or not they improve while you are waiting.

Ask what probably caused the TIA, whether atrial fibrillation or hypertension was found, and which warning signs require immediate action. Ask how to take each medicine safely and when your blood pressure and cholesterol need review.