What are the Characteristics of the Different Types of Strokes?
Strokes occur either due to a clot obstructing the flow of blood to the brain, called an Ischemic Stroke, or due to rupture of a blood vessel, called a Haemorrhagic Stroke. A Transient Ischemic Attack (TIA), also called “Mini Stroke”, is caused by a temporary clot.
Types of Stroke
Ischemic Strokes occur when the arteries in your brain get narrowed or blocked. This causes a persistently reduced blood flow to the brain, resulting in the death of brain tissue from lack of nutrients and oxygen.
Haemorrhagic Stroke occurs when a blood vessel in the brain ruptures or leaks. Brain Haemorrhages may be a result of different conditions that affect your blood vessels:
- Uncontrolled High Blood Pressure (Hypertension)
- Weak points in your Blood Vessel Walls (Aneurysms)
- Rupture of AVM etc
- Transient Ischemic Attack (TIA)
- Over-treatment with Anticoagulants (Blood Thinners)
A Transient Ischemic Attack (TIA) — also known as a mini-stroke — occurs when the blood flow is quickly restored and the brain tissue recover fully. In this condition , symptoms resolves fully within 24 hours without any brain infarction on brain imaging. Having TIA increases the possibility of major stroke that can cause permanent tissue damage.