A haemorrhagic stroke ("burst blood vessel") is one in which the arteries are broken typically due to elevations in blood pressure or a prior malformation. Because of this, blood is filtered by the brain, causing damage while disrupting the blood supply - brain cells in the affected area of the brain die from lack of oxygen (ischaemia).
The most common symptoms of a stroke are:
- Numbness, weakness or paralysis on one side of the body.
- Difficulty speaking or understanding.
- Sudden vision problems.
- Dizziness, loss of balance, knowledge or awareness.
- Sudden, unexplained severe headache.
- Mild loss of consciousness or awareness, especially if associated with any of the above symptoms.