A stroke caused by a ruptured blood vessel that bleeds into the subarachnoid space between the brain and the skull. This space between the web-like arachnoid membrane and the surface of the brain is filled with cerebrospinal fluid. It acts as a cushion to protect the brain from blows.

a disorder involving bleeding between the middle membrane covering of the brain and the brain itself, within the cerebrospinal fluid-filled spaces surrounding the brain (also known as the subarachnoid space)

an abnormal and very dangerous condition in which blood collects beneath the arachnoid mater, a membrane that covers the brain

a type of stroke, and it can damage the brain

a type of stroke in which bleeding from a damaged blood vessel causes an accumulation of blood at the surface of the brain

Bleeding around the outer area of the brain (subarachnoid space).

the type of brain hemorrhage in which blood from a ruptured blood vessel spreads over the surface of the brain. The most common cause is a ruptured aneurysm.

bleeding in area surrounding the spinal cord.

A hemorrhage in the space underneath the subarachnoid membrane that results in pressure on the brain or bleeding into the brain.

Blood in, or bleeding into, the space under the arachnoid membrane, most commonly from trauma or from rupture of an aneurysm.

bleeding on the surface of the brain.

a stroke that occurs when a blood vessel on the surface of the brain ruptures and bleeds into the space between the brain and the skull (but not into the brain itself).

Bleeding in the area surrounding the brain, that is usually a result of the rupturing of a cerebral aneurysm in the brain.

Bleeding within the head into the space between two membranes that surround the brain. The bleeding is beneath the arachnoid membrane and just above the pia mater. (The arachnoid is the middle of three membranes around the brain while the pia mater is the innermost one.) See the entire definition of Subarachnoid hemorrhage

bleeding in the area surrounding the brain, usually caused by a ruptured cerebral aneurysm

Bleeding in the space between two tissues covering the brain, the pia and the arachnoid.

bleeding in the subarachnoid space (space normally filled with cerebrospinal fluid, below the arachnoid membrane and above the brain.

Bleeding within the meninges, or outer membranes, of the brain into the clear fluid that surrounds the brain.

bleeding in the space surrounding the brain; may cause a stroke.

A cause of some strokes in which arteries on the surface of the brain begin bleeding.

The Condition"...Subarachnoid hemorrhages commonly cause arteries nearest to the site of bleeding to spasm and become narrower, so medicines may be used to prevent this reaction..."

The Condition"A subarachnoid hemorrhage occurs when bleeding from a damaged blood vessel causes an accumulation of blood at the surface of the brain..."

A subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space surrounding the brain, i.e., the area between the arachnoid and the pia mater. It may arise due to trauma or spontaneously, and is a medical emergency which can lead to death or severe disability even if recognized and treated in an early stage.