A subarachnoid hemorrhage is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. This may occur spontaneously, usually from a ruptured cerebral aneurysm, or may result from head injury. Symptoms include an intense headache with a rapid onset ("thunderclap headache"), vomiting, and an altered level of consciousness. The diagnosis is generally made with a CT scan of the head, or occasionally by lumbar puncture. SAH is managed with close observation and prompt neurosurgical investigations, medications and other treatment methods to help prevent recurrence of the bleeding and complications. SAH is a medical emergency and can lead to death or severe disability—even when recognized and treated at an early stage. Up to half of all cases of SAH are fatal and 10–15% die before reaching a hospital, and those who survive often have neurological or cognitive impairment. Subarachnoid hemorrhage is considered a form of stroke and causes 1–7% of all strokes. Surgery for aneurysms was introduced in the 1930s, but since the 1990s many aneurysms are treated by a procedure called "coiling", which is carried out from within the blood vessels.

Read the rest of this article: http://en.wikipedia.org/wiki/Subarachnoid_hemorrhage

_________________________ Today's selected anniversaries:

1773:

The first recorded ministry of education, the Commission of National Education, was formed in Poland. (http://en.wikipedia.org/wiki/Commission_of_National_Education)

1888:

French inventor Louis Le Prince filmed Roundhay Garden Scene, the earliest surviving motion picture, in Roundhay, Leeds, West Yorkshire, England. (http://en.wikipedia.org/wiki/Roundhay_Garden_Scene)

1926:

The first book featuring English author A. A. Milne's fictional bear Winnie-the-Pooh was first published. (http://en.wikipedia.org/wiki/Winnie-the-Pooh)

1947:

Flying at an altitude of 45,000 ft (13.7 km) in an experimental Bell X-1 rocket-powered aircraft, American test pilot Chuck Yeager (pictured) became the first person to break the sound barrier. (http://en.wikipedia.org/wiki/Chuck_Yeager)

1953:

Qibya massacre: Israeli military commander Ariel Sharon and his Unit 101 special forces were ordered to "inflict heavy damage on the inhabitants" of a village on the West Bank. (http://en.wikipedia.org/wiki/Qibya_massacre)

________________________ Wiktionary's Word of the day:

treacle: (noun) A syrupy byproduct of sugar refining; molasses or golden syrup. (http://en.wiktionary.org/wiki/treacle)

_________________ Wikiquote of the day:

The concept which assumes that everything in the Church is irrevocably set for all times appears to me to be a false one. It would be naive to disregard that the Church has a history; the Church is a human institution and like all things human, was destined to change and evolve; likewise, its development takes place often in the form of struggles. -- Edith Stein (http://en.wikiquote.org/wiki/Edith_Stein)