When blood flow to the brain stops due to the presence of a clot in a blood vessel damaged by atherosclerosis. The part of the brain that bleeds from this artery malfunctions or dies, which can cause severe permanent disability or death.
This is the most common form of stroke. The function of brain cells requires the constant supply of oxygen and glucose to the body. So a stroke can occur when the blood supply to the brain is cut off resulting in the death of the brain cells.
Obstruction of the blood flow of a vessel to the brain, from a clot that forms in another part of the body, most often in the heart. As in Ischemic Stroke, the neurological symptoms are due to insufficient perspiration of an area of the brain.
When a vessel inside or outside the brain ruptures, allowing blood to escape inside the skull (cerebral hemorrhage) and form a hematoma. Uncontrolled hypertension is very often the cause of this condition.
Neurological symptoms are often due to mechanical pressure exerted by the hematoma on adjacent brain tissues and may subside if the hematoma is surgically removed or absorbed.