Overview

Stroke is a medical emergency that occurs when blood flow to part of the brain is interrupted or reduced. Brain cells require continuous oxygen supply to function. When blood flow stops, brain tissue begins to die within minutes. Stroke may result in lasting neurological damage. It can affect movement, speech, vision, and cognition. There are two main types: ischemic and hemorrhagic. Stroke severity depends on the area of the brain involved. Immediate medical attention is critical. Early intervention improves recovery outcomes. Long-term rehabilitation may be necessary.

What Happens During Allergic Rhinitis?

In ischemic stroke, a blood clot blocks an artery supplying the brain. In hemorrhagic stroke, a blood vessel ruptures and causes bleeding in the brain. Both conditions deprive brain cells of oxygen. Affected brain tissue becomes damaged, leading to sudden neurological symptoms.

Diagnosis

Diagnosis includes neurological assessment and urgent imaging. CT or MRI scans determine the type of stroke. Blood tests and vascular imaging may identify underlying causes.