What are the different types of Stroke?

Types of Strokes

There are two main types of stroke: ischemic and hemorrhagic. Ischemic strokes are caused by a blockage of blood flow to the brain, while hemorrhagic strokes are caused by a rupture of a blood vessel in the brain.

Ischemic Strokes

Ischemic strokes can be further divided into two subtypes: thrombotic and embolic. Thrombotic strokes are caused by a blood clot that forms in an artery in the brain, while embolic strokes are caused by a blood clot that travels from another part of the body to the brain.

Thrombotic Strokes

Thrombotic strokes are the most common type of ischemic stroke. They occur when a fatty plaque builds up in the wall of an artery in the brain. This plaque can narrow the artery and make it more difficult for blood to flow through it. Over time, the plaque can rupture and form a blood clot that blocks the artery completely.

Embolic Strokes

Embolic strokes occur when a blood clot travels from another part of the body to the brain. This can happen if a blood clot forms in the heart, in a large artery in the neck, or in the leg. The blood clot can then travel to the brain through the bloodstream and block an artery there.

Hemorrhagic Strokes

Hemorrhagic strokes occur when a blood vessel in the brain ruptures. This can happen for a variety of reasons, including:

* Aneurysm: An aneurysm is a weak spot in the wall of a blood vessel. If an aneurysm ruptures, it can cause a hemorrhagic stroke.

* Arteriovenous malformation (AVM): An AVM is a tangle of abnormal blood vessels in the brain. AVMs can rupture and cause a hemorrhagic stroke.

* Head injury: A head injury can damage a blood vessel in the brain and cause a hemorrhagic stroke.

* Certain medical conditions: Some medical conditions, such as high blood pressure and diabetes, can increase the risk of a hemorrhagic stroke.

Symptoms of Stroke

The symptoms of stroke can vary depending on the type of stroke and the area of the brain that is affected. Some common symptoms of stroke include:

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

* Sudden confusion, trouble speaking or understanding speech

* Sudden problems with vision in one or both eyes

* Sudden dizziness, loss of balance, or coordination

* Sudden severe headache with no known cause

If you experience any of these symptoms, it is important to call 911 immediately. Stroke is a medical emergency and the faster you receive treatment, the better your chances of recovery.