Ischemic strokes account for approximately 85% of all stroke cases. They occur when a blood clot (thrombus) or a piece of a clot (embolus) blocks a cerebral blood vessel, preventing oxygen and essential nutrients from reaching the affected brain tissue. The lack of blood supply leads to the rapid death of brain cells, causing the symptoms associated with a stroke.

Hemorrhagic strokes, on the other hand, are caused by the rupture or leakage of a blood vessel in the brain. This type of stroke accounts for about 15% of stroke cases and can be further classified into two categories: intracerebral hemorrhage (ICH) and subarachnoid hemorrhage (SAH). ICH occurs when a blood vessel within the brain's tissue ruptures, while SAH happens when a blood vessel located on the brain's surface ruptures, causing blood to leak into the space surrounding the brain.

Other possible signs include dizziness, loss of balance, and severe pain in the face, arm, or leg on one side of the body. It is crucial to recognize these symptoms and seek immediate medical attention, as timely intervention can significantly impact the outcome of the stroke.