What is a hemorrhagic stroke, and what happens during it?

A hemorrhagic stroke is a critical medical emergency that occurs when a blood vessel inside or on the surface of the brain bursts, causing blood to rush into the surrounding brain tissue [1]. In a healthy brain, nerve cells do not come into direct contact with blood. When this rupture occurs, blood leaks out, causing an increase in intracranial pressure, which hinders the delivery of oxygen and essential nutrients to the cells, leading to their damage or death within minutes [3]. This condition is less common than an ischemic stroke but is often more severe, requiring immediate medical intervention to minimize permanent neurological damage [1], [3].

Types of Hemorrhagic Stroke

Hemorrhagic strokes are classified based on the location and source of the bleeding within the skull. An Intracerebral Hemorrhage is the most common type, where bleeding occurs directly inside the brain tissue itself [3]. The second type is a Subarachnoid Hemorrhage, which occurs in the space between the surface of the brain and the thin membranes covering it, often caused by the rupture of a blood vessel bulge known as an "aneurysm" [1], [3].

Underlying Causes and Risk Factors

A variety of factors contribute to the occurrence of a hemorrhagic stroke. Chronic, uncontrolled high blood pressure is one of the most prominent causes; constant pressure weakens blood vessel walls, making them susceptible to rupture over time [3]. Other causes include the presence of an aneurysm or arteriovenous malformations (AVMs), which are abnormal vascular formations that can rupture. Severe head injuries can also be a direct cause of brain bleeding [3].

Symptoms and Emergency Intervention

Symptoms of a hemorrhagic stroke are characterized by their sudden onset. Because time is the critical factor for survival—as the brain loses millions of cells with every minute of delay [2]—warning signs must be recognized quickly. For more details on preventive measures and how to handle Hemorrhagic Stroke: Causes, Symptoms, and Emergency Intervention (Arabic), seek emergency medical care immediately if any of the following symptoms are observed: sudden weakness or numbness in the face, arm, or leg (especially on one side of the body), difficulty speaking or understanding speech, sudden vision disturbance, sudden dizziness and loss of balance, or a severe, sudden headache with no clear cause [3].

The F.A.S.T. test can be used as a practical tool to remember the symptoms: Face (notice if one side droops when smiling), Arm (note weakness in one arm when raised), Speech (becomes slurred or strange), and Time (to call emergency services immediately) [3].

Medical Diagnosis and Treatment

This condition requires accurate and rapid diagnosis, as treatments used for ischemic strokes (such as clot-dissolving drugs) can be harmful and worsen bleeding if the type of stroke is not confirmed first [2]. Doctors use neuroimaging techniques, such as a computed tomography (CT) scan or magnetic resonance imaging (MRI), to determine the location and size of the bleeding [2]. The primary goal of treatment is to control the bleeding and relieve intracranial pressure through precise medical or surgical procedures, as well as managing potential complications. Recovery depends heavily on the individual patient's condition and the speed at which treatment begins, with a focus later on rehabilitation and clinical follow-up to improve quality of life [1].

Medical references

• Stroke Overview
• Assess and Treat
• Hemorrhagic Stroke