What condition results from a sudden occlusion of a cerebral artery?

A sudden occlusion of a cerebral artery leads to an ischemic stroke. This condition occurs when blood flow to a part of the brain is significantly reduced or cut off, often due to a clot obstructing the artery. The lack of oxygen and nutrients from that blood supply can cause brain cells to die, resulting in neurological deficits. Ischemic strokes can vary in severity and symptoms depending on the size and location of the affected area of the brain. This acute event requires immediate medical attention to restore blood flow and minimize damage.

In contrast, Alzheimer disease and other forms of dementia are chronic conditions characterized by progressive cognitive decline and are not directly caused by an abrupt blockage of blood flow. Myxedema refers to severe hypothyroidism and is unrelated to cerebral artery occlusion or strokes. Thus, the distinct nature of an ischemic stroke stems from its acute onset due to the obstruction of cerebral blood supply, differentiating it from the other conditions listed.