Lacunar stroke and TIA

Last updated: 23 Apr. 2026
Reviewed by: Specialist doctors from the Elfcare quality team

Have you ever felt sudden weakness, a facial droop, or slurred speech that vanished within minutes? These "mini-strokes," known as Transient Ischemic Attacks (TIAs), are urgent warnings that blood flow to your brain is being interrupted.

When this occurs in the brain's deep, small arteries, it is often a precursor to a Lacunar stroke. Driven by "small vessel disease" and chronic factors like high blood pressure, these episodes signal that your brain’s internal wiring is under stress.

Elfcare uses high-resolution brain MRI to detect silent vascular changes and blood panels to identify the metabolic triggers behind them. Catching these signals early allows you to manage your circulation proactively, preventing a temporary warning from becoming permanent damage.

Important: If you or someone around you is experiencing stroke symptoms right now — sudden face drooping, arm weakness, or speech difficulty — call emergency services (112 in Sweden) immediately. Stroke is a medical emergency. Elfcare's health check is for proactive detection, not acute care.

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What are lacunar stroke and TIA?

A lacunar stroke is a deep-brain blockage, while a TIA is a temporary "warning" episode. Together, they are key indicators of your vascular health.

A lacunar stroke occurs when a tiny artery deep in the brain becomes blocked, often due to long-term high blood pressure. These are frequently "silent," meaning they show up on an MRI even if you never felt a symptom.

A TIA (Transient Ischemic Attack) is a temporary blockage. It causes stroke-like symptoms that disappear quickly, but it serves as a critical warning that a more serious event could be imminent. Approximately 10–15% of people who have a TIA will have a full stroke within 90 days, with the highest risk in the first 48 hours. TIA requires urgent medical assessment.

Many lacunar strokes are "silent," occurring without noticeable symptoms and only discovered during routine imaging. Elfcare’s brain MRI is specifically designed to identify these incidental findings and small-vessel changes, allowing you to address vascular health before a silent warning becomes a clinical event.

Symptoms of Lacunar stroke and TIA

Lacunar strokes and TIAs can present very differently. Lacunar strokes are often silent, many people experience no symptoms at all. When symptoms do occur, they appear suddenly and include:

  • Weakness or numbness on one side of the face, arm, or leg

  • Speech difficulty — slurred speech or difficulty finding words

  • Visual disturbances — blurred or double vision

  • Sudden severe headache with no clear cause

  • Dizziness or loss of balance and coordination

  • Brief confusion or disorientation

The FAST acronym is a useful reminder of the key warning signs: Face drooping, Arm weakness, Speech difficulty, Time to call emergency services.

TIA symptoms are identical but temporary, resolving fully within minutes to hours. The brief, self-resolving nature of TIA symptoms is precisely why they are so often dismissed, and why they must never be ignored.

That’s why testing is so important; it helps confirm what your body may be trying to tell you.

What causes lacunar stroke?

Lacunar strokes are caused by small vessel disease — chronic damage to the brain's tiny penetrating arteries. The primary drivers are:

  • Hypertension: the single most important risk factor; sustained high blood pressure damages small vessel walls, causing them to thicken, narrow, and eventually occlude

  • Diabetes: accelerates small vessel damage through glycation of vessel walls and impaired endothelial function

  • Smoking: causes direct vascular endothelial damage and accelerates atherosclerosis

  • High cholesterol: contributes to arterial stiffness and plaque formation in feeding vessels

  • Age: small vessel disease accumulates over decades; risk increases significantly after 55

  • Elevated homocysteine: damages vessel walls and promotes a prothrombotic state

  • Chronic inflammation: low-grade systemic inflammation accelerates vascular damage over time

By identifying these metabolic and vascular triggers early through blood panels, you can manage the root causes of small vessel disease before they lead to a stroke.

How is lacuna stroke detected?

Detection combines brain imaging, which identifies past infarcts and small vessel disease, with blood tests that assess the vascular risk factors driving the underlying damage.

Brain MRI: MRI is the only tool that can identify silent lacunar infarcts — small areas of past brain tissue death in the deep white matter and basal ganglia. It also detects white matter hyperintensities and chronic microvascular changes reflecting cumulative small vessel damage. Elfcare's full body MRI includes comprehensive brain imaging as standard, making it directly relevant to lacunar stroke detection.

Blood tests: Blood tests identify the modifiable risk factors driving small vessel disease. Relevant markers in Elfcare's panel include:

  • Cholesterol, LDL, Apo B, and Lipoprotein(a): lipid markers that drive vascular damage

  • HbA1c and glucose: diabetes is a major small vessel disease risk factor

  • Homocysteine: elevated levels independently damage vessel walls

  • CRP: inflammation linked to atherosclerosis progression

  • Creatinine and eGFR: kidney disease is closely associated with small vessel disease

  • TSH: thyroid dysfunction affects overall cardiovascular risk

Elfcare’s health checks includes imaging and these biomarkers, allowing you to see early signs of imbalance and take steps before symptoms arise. When these results are viewed together, they provide a clear picture of how well your brain is functioning.

Why early detection matters

Most vascular changes that lead to stroke happen silently over years. Small increases in cholesterol or blood pressure can slowly narrow arteries long before noticeable symptoms appear.

Early testing means you can act when it’s easiest – adjusting diet, managing stress, or following up with your doctor for guidance. These steps help maintain energy, focus, and clear thinking while supporting long-term brain function.

How Elfcare can help

Elfcare's full body MRI includes comprehensive brain imaging that can identify silent lacunar infarcts, white matter changes, and chronic microvascular disease, findings that confirm cerebrovascular disease and signal elevated future stroke risk, often in people who have no idea anything has occurred. This is one of the most impactful incidental findings that can be made during a full body health check.

Our blood panel covers the full vascular risk profile — lipids, HbA1c, homocysteine, CRP, kidney function, and thyroid markers — providing a complete picture of the modifiable risk factors driving small vessel disease.

If our MRI or blood tests identify a suspicious finding, we take care of further diagnostics or refer you to the appropriate specialist.

Book a consultation to learn more
Book a consultation to learn more

Summary

Lacunar stroke and TIA are not sudden events. They often begin with small, hidden imbalances that grow over time. Regular checks make these changes visible, long before they become serious.

Elfcare's full body MRI images the brain as standard and can identify lacunar infarcts, white matter changes, and chronic microvascular disease. Our blood panel covers the complete vascular risk profile.

By staying aware and proactive, you can protect your brain health and overall vitality. When you understand your body, you can make choices that support your energy, focus, and long-term health.

Last updated: 23 Apr. 2026
Reviewed by: Specialist doctors from the quality team at Elfcare

FAQ

  • A lacunar stroke is a small vessel stroke caused by the blockage of a tiny penetrating artery deep in the brain. It leaves a characteristic small infarct — an area of dead brain tissue — visible on MRI. Many lacunar strokes are clinically silent, causing no obvious symptoms, and are discovered incidentally on imaging. They are caused almost exclusively by chronic small vessel disease from hypertension, diabetes, and smoking.

  • A TIA (transient ischaemic attack) is a temporary interruption of blood flow to the brain that causes stroke-like symptoms resolving fully within 24 hours. Unlike a lacunar stroke, it leaves no permanent infarct on imaging. TIA is a medical emergency — the risk of full stroke in the following days is high and requires urgent assessment.

  • Sudden weakness or numbness on one side of the body, speech difficulty, visual disturbances, dizziness, and severe headache. Lacunar strokes are frequently silent — no symptoms at all. TIA symptoms are identical but temporary. Any sudden neurological symptom requires emergency assessment — use FAST: Face drooping, Arm weakness, Speech difficulty, Time to call 112.

  • Chronic small vessel disease driven primarily by hypertension — the single most important risk factor. Diabetes, smoking, high cholesterol, elevated homocysteine, and chronic inflammation all contribute to the progressive damage of the brain's tiny arteries over time.

  • Yes. Elfcare's brain MRI can identify silent lacunar infarcts, white matter changes, and chronic microvascular disease, often in people with no history of neurological symptoms. Our blood panel covers the full vascular risk profile. If a finding is made, we take care of further diagnostics or refer you to the appropriate specialist.

  • Yes — and this is the most important message. The risk factors driving small vessel disease and lacunar stroke are largely modifiable. Blood pressure control is the single most effective intervention. Lipid-lowering therapy, blood sugar management, smoking cessation, regular exercise, and a Mediterranean-style diet all substantially reduce stroke risk. Identifying silent disease early, through brain MRI and vascular blood markers, is the foundation of effective prevention.