what do u know about SAH?

Symptoms of SAH include a severe headache with a rapid onset ("thunderclap headache"), vomiting, confusion or a lowered level of consciousness, and sometimes seizures.[1] The diagnosis is generally confirmed with a CT scan of the head, or occasionally by lumbar puncture. Treatment is by prompt neurosurgery or radiologically guided interventions with medications and other treatments to help prevent recurrence of the bleeding and complications. Surgery for aneurysms was introduced in the 1930s, but since the 1990s many aneurysms are treated by a less invasive procedure called "coiling", which is carried out by instrumentation through large blood vessels

The classic symptom of subarachnoid hemorrhage is thunderclap headache (a headache described as "like being kicked in the head",[4] or the "worst ever", developing over seconds to minutes). This headache often pulsates towards the occiput (the back of the head).[5] About one-third of sufferers have no symptoms apart from the characteristic headache, and about one in ten people who seek medical care with this symptom are later diagnosed with a subarachnoid hemorrhage.[1] Vomiting may be present, and 1 in 14 have seizures.[1] Confusion

decreased level of consciousness or coma may be present, as may neck stiffness and other signs of meningism.[1] Neck stiffness usually presents six hours after initial onset of SAH.[6] Isolated dilation of a pupil and loss of the pupillary light reflex may reflect brain herniation as a result of rising intracranial pressure (pressure inside the skull).[1] Intraocular hemorrhage (bleeding into the eyeball) may occur in response to the raised pressure: subhyaloid hemorrhage (bleeding under the hyaloid membrane