---
title: "Hemorrhagic Stroke | Intro to Brain and Behavior"
description: "Hemorrhagic stroke is brain bleeding from a ruptured vessel, and in Intro to Brain and Behavior it helps explain sudden language loss, pressure, and brain damage."
canonical: "https://fiveable.me/introduction-brain-behavior/key-terms/hemorrhagic-stroke"
type: "key-term"
subject: "Intro to Brain and Behavior"
unit: "Unit 9"
---

# Hemorrhagic Stroke | Intro to Brain and Behavior

## Definition

A hemorrhagic stroke happens when a blood vessel bursts and bleeds into or around the brain. In Intro to Brain and Behavior, it matters because the bleeding can damage language and other brain functions fast.

## What It Is

A hemorrhagic stroke is a type of stroke caused by bleeding in or around the brain, usually from a ruptured blood vessel. In Intro to Brain and Behavior, you study it as a brain injury that disrupts neural function by both cutting off normal blood flow and adding pressure from leaked blood.

That pressure matters as much as the bleeding itself. Brain tissue is packed inside the skull, so extra fluid has nowhere to go. As blood collects, it can compress nearby neurons, reduce oxygen delivery, and damage tissue around the bleed. The result can be sudden changes in speech, movement, awareness, and language processing.

There are two major forms you need to recognize. An intracerebral hemorrhage happens when bleeding occurs directly within the brain tissue. A subarachnoid hemorrhage happens when bleeding enters the space around the brain, between the brain and the protective layers covering it. Both can be dangerous, but they affect the brain a little differently depending on where the blood spreads.

Several conditions can lead to this kind of stroke. High blood pressure is a major risk factor because it puts constant stress on vessel walls. Aneurysms can rupture, and arteriovenous malformations can create weak or abnormal vessel connections that are more likely to bleed. Smoking, heavy alcohol use, and anticoagulant medications can also raise the risk.

Symptoms usually appear suddenly. A person may develop a severe headache, weakness on one side, trouble speaking, confusion, or loss of consciousness. In a brain and behavior course, this is the part that links anatomy to behavior: if the bleed affects language areas or their connections, the person may show aphasia, slurred speech, or trouble understanding words.

One useful way to think about hemorrhagic stroke is that it damages the brain in two steps at once. First, blood leaks where it should not be. Then the leak disrupts the nearby networks that make movement, sensation, speech, and consciousness work normally.

## Why It Matters

Hemorrhagic stroke shows up in Intro to Brain and Behavior because it connects brain structure to real changes in thinking and communication. If bleeding damages the left hemisphere language network, you can see aphasia, word-finding problems, or impaired comprehension. If it affects motor pathways, the person may also lose strength or coordination on one side of the body.

This term also helps you separate cause from symptom. The stroke itself is the vascular event, while aphasia, weakness, or confusion are the behavioral effects you observe afterward. That distinction comes up often in this course, especially when you study how brain injuries map onto specific functions.

It also gives you a concrete example of why timing matters in brain disorders. Neurons are sensitive to oxygen loss and pressure changes, so a hemorrhagic stroke can become a medical emergency very quickly. When you trace the chain from vessel rupture to tissue damage to behavior change, you are doing the same kind of reasoning the course asks for in case questions and brain-damage examples.

## Connections

### aphasia

Hemorrhagic stroke can cause aphasia when bleeding damages language areas in the left hemisphere or the connections between them. That is why a sudden stroke can lead to trouble speaking, understanding speech, reading, or writing. In this course, aphasia is often the behavior-level symptom you use to trace where the brain injury may have happened.

### aneurysm

An aneurysm is a weakened, bulging blood vessel that can rupture and trigger a hemorrhagic stroke. The connection is mechanical, not symbolic: the vessel wall fails, blood escapes, and pressure builds inside the skull. When you see aneurysm in a brain and behavior unit, think about it as one possible source of sudden brain bleeding.

### [ischemic stroke](/introduction-brain-behavior/key-terms/ischemic-stroke)

Ischemic stroke and hemorrhagic stroke are both strokes, but the first is caused by blocked blood flow and the second by bleeding. That difference changes the mechanism of injury. In class comparisons, you may be asked to identify whether a case describes a clot cutting off oxygen or a vessel rupture causing pressure and tissue damage.

### neuroimaging

Neuroimaging is often used to identify where the bleeding is and how much brain tissue is affected. In a hemorrhagic stroke case, scans help distinguish intracerebral from subarachnoid bleeding and show the location of damage. In this course, imaging is the evidence that links the symptoms you observe to the brain area involved.

## On the AP Exam

A quiz question or case analysis may describe sudden headache, speech trouble, and one-sided weakness, then ask you to identify the stroke type or explain the brain mechanism. Your job is to notice the bleeding, not just the symptom list. If the prompt mentions a ruptured vessel, pressure inside the skull, or a subarachnoid or intracerebral bleed, hemorrhagic stroke is the match.

You may also be asked to connect the stroke to aphasia or another language disorder. In that case, explain which brain function is disrupted and why the person’s speech or comprehension changed after the injury. Short-answer questions often reward the chain of cause and effect: vessel rupture, bleeding, pressure, tissue damage, and then behavior change.

## hemorrhagic stroke vs ischemic stroke

These are the two main stroke types, and they are easy to mix up. Ischemic stroke happens when blood flow is blocked, usually by a clot, while hemorrhagic stroke happens when a vessel bursts and bleeds into or around the brain. If the question mentions bleeding or rupture, think hemorrhagic. If it mentions blockage or lack of blood flow, think ischemic.

## Key Takeaways

- A hemorrhagic stroke is brain bleeding caused by a ruptured blood vessel.
- The damage comes from both the blood loss and the pressure the blood creates inside the skull.
- Intracerebral hemorrhage happens within brain tissue, while subarachnoid hemorrhage happens in the space around the brain.
- High blood pressure, aneurysms, arteriovenous malformations, smoking, alcohol use, and anticoagulants can raise the risk.
- In Intro to Brain and Behavior, this term often shows up when you trace a brain injury to aphasia, weakness, or other sudden behavior changes.

## FAQs

### What is hemorrhagic stroke in Intro to Brain and Behavior?

It is a stroke caused by bleeding in or around the brain after a blood vessel ruptures. In this course, you use it to connect vascular damage to changes in language, movement, and consciousness. The bleed can hurt brain tissue directly and also raise pressure inside the skull.

### How is hemorrhagic stroke different from ischemic stroke?

Hemorrhagic stroke is bleeding, while ischemic stroke is blocked blood flow. That difference changes the cause of the brain injury, even though both can lead to sudden neurological symptoms. If a case says rupture, bleed, or blood leaking into the brain, it points to hemorrhagic stroke.

### Can hemorrhagic stroke cause aphasia?

Yes, if the bleeding damages language areas or the pathways that connect them. Aphasia is not the stroke itself, but a possible result of the brain tissue injury. That is why stroke cases in this course often pair vascular damage with language symptoms.

### What symptoms might a hemorrhagic stroke cause?

A person may have a sudden severe headache, weakness, speech problems, confusion, or loss of consciousness. The exact symptoms depend on where the bleeding happens and how much pressure it creates. The faster the bleed spreads, the more likely the symptoms are to appear suddenly and severely.

## Related Study Guides

- [9.2 Aphasia and language disorders](/introduction-brain-behavior/unit-9/aphasia-language-disorders/study-guide/bzu13a9V7W74INhW)

## About This Document

Canonical Fiveable pages are available as Markdown at the same path plus `.md`.

- [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns
- [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing
- [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`)
- [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`)

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