Vanchilingam Hospital Thanjavur



Understanding Different Types of Stroke: Causes, Symptoms, and Prevention

Strokes are a serious medical condition that can have life-altering consequences, making it crucial for individuals to understand the different types, their causes, symptoms, and preventive measures. A stroke occurs when blood flow to the brain is disrupted, leading to damage or death of brain cells. In this blog post, we will delve into the various types of strokes and shed light on the importance of awareness and prevention.


Types of Strokes:


Ischemic Stroke:


This is the most common type of stroke, accounting for approximately 87% of all cases. It occurs when a blood clot obstructs a blood vessel, cutting off the blood supply to a part of the brain.

Hemorrhagic Stroke:


This type results from a blood vessel rupture, causing bleeding into the brain. Hemorrhagic strokes are less common but often more severe than ischemic strokes.

Transient Ischemic Attack (TIA):


Also known as a “mini-stroke,” a TIA is a temporary disruption of blood flow to the brain. While TIAs do not cause permanent damage, they serve as a warning sign of a potential future stroke.


Subarachnoid Hemorrhage (SAH):


Caused by an aneurysm, this type involves bleeding into the space between the brain and the surrounding membrane. It can lead to a sudden, severe headache.


Subdural Hemorrhage (SDH):


Resulting from the tearing of veins between the surface of the brain and its outer covering, SDH can cause symptoms like confusion and headache.


Cerebral Venous Sinus Thrombosis (CVST):

Involving the formation of blood clots in the brain’s venous sinuses, CVST can lead to a range of symptoms, including headache and seizures.

Causes and Risk Factors:


Hypertension (High Blood Pressure):


Vascular Damage: Uncontrolled high blood pressure damages blood vessels, fostering the development of atherosclerosis and increasing the risk of strokes.


Atherosclerotic Plaque Formation: Elevated pressure accelerates the deposition of cholesterol on vessel walls, forming atherosclerotic plaques and elevating the risk of ischemic strokes.


Increased Hemorrhagic Stroke Risk: Persistent high blood pressure weakens vessel walls, heightening the risk of hemorrhagic strokes through vessel rupture.



Inflammatory Response: Tobacco smoke triggers an inflammatory response in blood vessels, promoting the accumulation of plaque. This inflammatory environment contributes to the deterioration of vessel walls, heightening the risk of strokes.


Carbon Monoxide Exposure: The carbon monoxide in tobacco smoke reduces the oxygen-carrying capacity of the blood. This lack of oxygen can lead to tissue damage, increasing the likelihood of clot formation and stroke.



Endothelial Dysfunction: Diabetes impairs the function of endothelial cells lining blood vessels, disrupting their ability to regulate blood flow. This dysfunction contributes to the development of atherosclerosis and raises the risk of strokes.


Prothrombotic State: Diabetes creates a prothrombotic state in the bloodstream, making it more prone to clot formation. These abnormal blood clots can travel to the brain, causing blockages and increasing the likelihood of a stroke.

Age and Gender:


Arterial Stiffness: With age, arteries tend to lose their elasticity, becoming stiffer. This arterial stiffness contributes to increased blood pressure and a higher risk of strokes as blood vessels become less adaptable.


Hormonal Changes (Gender): The hormonal shifts in women during menopause result in altered lipid profiles and increased blood pressure. These changes, combined with age-related vascular alterations, contribute to a rising stroke risk in postmenopausal women.



  • Sudden numbness or weakness in the face, arm, or leg, especially on one side of the body.

  • Confusion, trouble speaking, or difficulty understanding speech.

  • Severe headache with no apparent cause.

  • Trouble seeing in one or both eyes.

  • Difficulty walking, dizziness, loss of balance, or coordination.



Healthy Lifestyle Choices:


Adopting a healthy diet, engaging in regular physical activity, and maintaining a healthy weight contribute to overall cardiovascular health, reducing the risk of stroke.

Regular Health Check-ups:


Monitoring and managing risk factors such as blood pressure, cholesterol levels, and diabetes through regular check-ups are essential.

Smoking Cessation:


Quitting smoking significantly reduces the risk of stroke and other cardiovascular diseases.

Advanced Stroke Care in Chennai:


Vanchilingam Advanced Neurology & Stroke in Chennai extends specialized stroke care to a broader population, providing advanced treatments and hope to those in need. The unwavering commitment of the facility to delivering tertiary-level stroke care reflects not only a dedication to treating strokes but also an emphasis on employing cutting-edge techniques for interventions. Dr. Somesh Vanchilingam’s expertise and leadership in interventional neurology underscore the hospital’s resolve to maintain a leadership position in stroke care. 

If you or your loved ones experience any of these symptoms, please visit Vanchilingam Advanced Neurology & Stroke for specialized stroke care. Save this number for stroke emergencies: 893 9998 108.

Blog Reviewed by: Dr. Somesh Vanchilingam

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