A subarachnoid hemorrhage is the bursting of a blood vessel in the
brain. This results in sudden bleeding into the space between the middle lining
of the brain (arachnoid membrane) and the brain itself.
A subarachnoid hemorrhage causes sudden, severe head pain. This
condition requires immediate medical care to prevent brain injury and
E. Gregory Thompson, MD - Internal Medicine & Karin M. Lindholm, DO - Neurology