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. Historically, around 10-15% of people who have a TIA go on to have a full stroke within 90 days, with the highest risk in the first 48 hours, though with prompt medical evaluation and treatment, that risk drops substantially, to as low as around 5% in some studies.

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.

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.

Women are somewhat more likely than men to experience atypical symptoms, such as sudden confusion, nausea, or loss of consciousness, rather than the classic one-sided weakness or facial droop. If something feels suddenly wrong, even if it doesn't match the textbook pattern, treat it with the same urgency.

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.

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

• Female-specific risk factors: pregnancy complications such as pre-eclampsia, oral contraceptive use (particularly combined with smoking or migraine with aura), and the hormonal changes of menopause are all associated with increased stroke and TIA risk, and are often overlooked in standard risk assessments. Migraine with aura specifically roughly doubles stroke risk in women, an association not clearly seen in men

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 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 check includes imaging and these biomarkers, allowing you to see early signs of imbalance and take steps before symptoms arise.

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.

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.