Subarachnoid hemorrhage: Subarachnoid haemorrhage (SAH) is a

Subarachnoid haemorrhage (SAH) is a type of extra-axial intracranial haemorrhage and denotes the presence of blood within the subarachnoid space. Spinal subarachnoid haemorrhage is discussed separately. Epidemiology Patients tend to be older mi... A subarachnoid haemorrhage is a rare but life-threatening type of stroke that needs emergency treatment. Find out about the symptoms, causes and recovery. Subarachnoid hemorrhage - an easy to understand guide covering causes, diagnosis, symptoms, treatment and prevention plus additional in depth medical information. A subarachnoid hemorrhage is an emergency condition that occurs when there is bleeding in the space surrounding the brain and subarachnoid space.