Lacunar Stroke

Overview

A lacunar stroke is a small stroke that happens deep inside the brain. The word "lacunar" refers to a tiny space or "hole" that can form where brain tissue was damaged. It is caused by a blockage in one of the small blood vessels that supply deep parts of the brain. The blockage stops blood and oxygen from reaching a small area of brain tissue.

Lacunar stroke is a common type of ischemic stroke. It happens when a tiny blood vessel deep in the brain gets blocked.

It is most common in older adults, especially people with high blood pressure, diabetes, or a smoking history. It can affect anyone, but it is rare in children.

Symptoms

Common symptoms

• Sudden weakness or numbness in the face, arm, or leg, usually on one side of the body
• Clumsiness or heaviness in one hand or leg
• Slurred or unclear speech, or trouble finding words
• Trouble walking or a feeling of imbalance
• A change in how things feel, such as numbness or tingling
• Symptoms may be mild and easy to miss

Symptoms in children

• Lacunar stroke is very rare in children. A child with sudden weakness on one side, speech trouble, or a change in alertness needs emergency care.

Symptoms in older adults

• Lacunar strokes are more common in older adults, especially with high blood pressure. Symptoms can be mistaken for tiredness or aging, so sudden changes need urgent checks.

Causes

Main causes

• Blockage of a small blood vessel deep in the brain
• Small vessel disease, where tiny blood vessels become narrowed or scarred
• A blood clot or fatty build-up blocking a tiny artery

Risk factors

• High blood pressure
• Diabetes
• High cholesterol
• Smoking
• Older age
• Family history of stroke
• Obesity and inactivity
• Unhealthy diet
• Heavy alcohol use
• Sleep apnea
• Previous stroke or mini-stroke

When to see a doctor

See a doctor urgently if:

• Any stroke sign happening now — call your local emergency number
• Symptoms that came and went — seek same-day urgent advice
• New weakness, numbness, or speech change even if mild — get urgent medical help

Book a routine appointment if:

• Discuss blood pressure, diabetes, and cholesterol control with your doctor
• Ask about stopping smoking and healthy lifestyle changes
• Talk about your family history and stroke risk

Diagnosis

Doctors diagnose lacunar stroke by checking your symptoms, doing a neurological exam, and looking at brain scans. They also look for the cause, such as high blood pressure or diabetes.

Tests that may be done

• Neurological exam
• CT scan of the brain
• MRI scan of the brain
• Blood tests
• ECG (heart tracing)
• Ultrasound of neck arteries or heart tests if needed

What to expect at your appointment

You may be seen in an emergency department. Doctors will check your brain and nerve function, arrange scans, and decide whether you need to stay in hospital. They will also start a plan to prevent another stroke.

Treatment

Treatment has three main goals: get help fast, prevent another stroke, and help you recover. In the first hours, emergency teams decide if you need special clot treatment. Later, the focus is on controlling blood pressure, blood sugar, cholesterol, and other risks, plus rehabilitation.

Self-care at home

• Take medicines exactly as prescribed
• Check blood pressure at home if your team advises it
• Quit smoking and avoid second-hand smoke
• Limit alcohol
• Eat vegetables, fruit, whole grains, and lean protein; cut back on salt and processed foods
• Move regularly within your ability
• Attend rehabilitation and follow-up appointments

Medical treatments

Doctors may prescribe medicines to lower blood pressure, control blood sugar, lower cholesterol, and reduce the chance of blood clots. You may also work with physiotherapists, occupational therapists, and speech and language therapists. Your team will tailor treatment to your needs.

When is surgery considered?

Surgery is not usually needed for a lacunar stroke. If tests find another cause, such as a narrowed neck artery, your team may discuss procedures. Most treatment is medicines and rehabilitation.

Living with this condition

After a lacunar stroke, you may feel tired, need more rest, and find some tasks harder. Recovery varies. Some people have few lasting problems; others need weeks or months of rehabilitation. Plan your day, ask for help, and build activity slowly.

Lifestyle tips

• Keep blood pressure in a healthy range
• Stay active within your ability
• Eat a heart-healthy diet
• Quit smoking
• Limit alcohol
• Take medicines as prescribed
• Attend follow-up appointments

Diet and exercise

A heart-healthy diet is rich in vegetables, fruit, whole grains, beans, nuts, and lean protein. Cut back on salt, sugary drinks, and processed foods. Ask your team about safe exercise; walking, light strength work, and balance exercises are often helpful.

Mental health and emotional wellbeing

Stroke can shake your confidence and mood. Depression and anxiety are common and treatable. Tell your doctor or stroke team. If you feel hopeless or have thoughts of harming yourself, contact your local emergency number or a crisis support service right away.

Prevention

Many lacunar strokes can be prevented or made less likely by managing blood pressure, diabetes, cholesterol, smoking, and other risks. No plan can remove all risk, but small changes matter.

Vaccines

There is no vaccine for lacunar stroke. Keep up with routine vaccinations your doctor recommends, because infections can make blood vessel problems harder to manage.

Screening programmes

Regular checks of blood pressure, blood sugar, and cholesterol are important. Ask your doctor how often you need them, especially if you have risk factors or a family history of stroke.

Complications

If left untreated

• Another stroke or mini-stroke
• Memory and thinking problems
• Walking, balance, or coordination problems
• Depression or anxiety
• More trouble with daily activities

Long-term outlook

The outlook after a lacunar stroke is often better than after a large stroke, but it still needs care. Many people make a good recovery with rehabilitation and risk control. Getting help early and keeping up with follow-up lowers the chance of another stroke.

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