Subarachnoid haemorrhage

Definition

A stroke is a medical emergency. There are two types - ischemic and hemorrhagic. Hemorrhagic stroke is the less common type. It happens when a blood vessel breaks and bleeds into the brain. Within minutes, brain cells begin to die.

Causes and Risk Factors 

Causes include: 
1. Bleeding aneurysm
2. Arteriovenous malformation (AVM)
3. Artery wall that breaks open

Signs and Symptoms 

Symptoms of stroke are:

1. Sudden numbness or weakness of the face, arm or leg (especially on one side of the body)

2. Sudden confusion, trouble speaking or understanding speech

3. Sudden trouble seeing in one or both eyes

4. Sudden trouble walking, dizziness, loss of balance or coordination

5. Sudden severe headache with no known cause

Treatment

It is important to treat strokes as quickly as possible. Treatment includes,
1. Surgery
2. Post-stroke rehabilitation can help people overcome disabilities caused by stroke damage.

National Institute of Neurological Disorders and Stroke