Subarachnoid Hemorrhage

Subarachnoid Haemorrhage is a rare condition, which affects 1 in 10,000 people in the UK.
It is a sudden leak of blood over the surface of the brain under the arachnoid membrane. Most
spontaneous subarachnoid haemorrhage are due to a rupture of on inter-cranial aneurysm.

The aneurysm is a swelling of one of the blood vessels supplying blood to the brain. The aneurysm wall tears under pressure and blood will haemorrage into the surrounding tissue.

The symptoms characteristic of a bleed in the brain include the onset of sudden severe headache with nausea and vomiting. Some individuals may lose consciousness, often may have a seizure.

The bleed may follow a period of physical effort, which raises the blood pressure.

Diagnosis of Subarachnoid Haemorrhage is critical in the management of interventional treatment. The SAH condition differs in severity for each individual
and treatment may vary.

An individual's condition and the size and location of an aneurysm will determine the appropriate form of treatment.

Although surgical techniques are the commonest form of treatment of aneurysms "endovascular" treatment can be performed from inside the artery.