Hemorrhagic Stroke
Hemorrhagic strokes are caused by bleeding in the brain. These strokes tend to be much more serious than those caused by blood clots. They are more likely to have a poor outcome and high mortality rate.

Hemorrhagic strokes cause brain damage in two ways:

• Loss of blood supply
• Effects of bleeding:
• Bleeding within brain tissue causes swelling and increases the pressure against the brain.
• The pressure directly injures brain cells.

Hemorrhagic strokes account for about 15 percent of all strokes. One type of hemorrhagic stroke, a subarachnoid hemorrhage, accounts for about 5 to 7 percent of all strokes.