Vomiting Blood (Hematemesis): Causes, Symptoms, Diagnosis, and Treatment

Overview

• Vomiting blood (hematemesis) means blood is present in vomit and usually comes from the upper gastrointestinal (GI) tract.
• It is treated as a medical emergency until evaluated.
• Blood may appear bright red or dark/coffee-ground–like.
• Bleeding may stop on its own, but it can also become severe or life-threatening.
• Any amount of blood in vomit is abnormal and requires medical assessment.

What Is Vomiting Blood (Hematemesis)?

Vomiting blood—medically called hematemesis—refers to blood in vomit that originates from the upper GI tract, which includes the esophagus, stomach, and duodenum (the first part of the small intestine).

This is different from:

• Coughing up blood (hemoptysis), which comes from the lungs or airways.
• Vomiting swallowed blood, such as blood from a nosebleed, which may appear in vomit but did not originate in the digestive tract.

Is Vomiting Blood an Emergency?

Yes. Vomiting blood is treated as a medical emergency until a healthcare professional determines otherwise.

Authoritative medical sources consistently emphasize that:

• Bleeding may stop quickly, but it can also become severe.
• The seriousness cannot be determined without evaluation.
• Severe blood loss can lead to shock, organ failure, and death.

What Does Vomiting Blood Look Like?

The appearance of blood in vomit can reflect different bleeding patterns:

• Bright red blood
  Indicates fresh, active bleeding that may be rapid or heavy.
• Dark brown or “coffee-ground” material
  Indicates older blood that has been exposed to stomach acid long enough to darken, often associated with slower bleeding.
• Vomiting blood with black, tar-like stools (melena)
  Indicates a large amount of bleeding into the gastrointestinal tract.

Regardless of appearance, all forms require medical evaluation.

Common Causes of Vomiting Blood

Vomiting blood results from bleeding in the upper digestive system.

Esophageal Causes

• Mallory–Weiss tears: Tears in the lining of the esophagus or stomach caused by repeated vomiting, retching, coughing, or straining.
• Esophageal varices: Enlarged veins in the esophagus, commonly associated with liver cirrhosis and increased portal vein pressure; these veins may bleed heavily.
• Esophagitis: Inflammation of the esophagus, often related to acid reflux.
• Esophageal cancer: Can cause bleeding into the esophagus.

Stomach Causes

• Gastric (stomach) ulcers: Breaks in the stomach lining that may bleed, sometimes heavily.
• Gastritis: Inflammation of the stomach lining, with causes similar to ulcers.
• Stomach cancer: Can cause bleeding into the stomach.

Duodenal Causes

• Duodenal ulcers: Ulcers in the first part of the small intestine that may bleed significantly.

Other Verified Causes

• Anti-inflammatory medications and aspirin, which can contribute to ulcer formation and bleeding.
• Alcohol-related liver disease, which can lead to varices.
• Swallowed blood, such as after a nosebleed.

When vomiting blood, healthcare providers’ first priority is to stop any active internal bleeding, using various medical interventions depending on the source. It’s important to note that if the bleeding is related to a chronic or underlying condition, such as liver disease or recurrent ulcers, the risk of recurring hematemesis remains until the root cause is addressed. Ongoing or repeat episodes can occur if the underlying problem isn’t treated, making long-term management and follow-up care essential.

Vomiting Blood in Children

Vomiting blood can also occur in children. Verified causes include:

• Swallowed foreign objects
• Congenital abnormalities
• Swallowed blood, such as from nosebleeds

In rare cases, traumatic injury—such as a direct blow to the stomach or esophagus—can cause internal bleeding that leads to vomiting blood. Medical procedures may also occasionally cause internal injury and bleeding.

Children may experience bleeding from tears in the esophagus (similar to Mallory–Weiss syndrome in adults), which can result from repeated vomiting or severe coughing. Both benign and malignant tumors, though uncommon in children, may also bleed into the upper digestive tract and cause blood in vomit. Abnormal blood vessels (angiodysplasias) are rare but can be a source of gastrointestinal bleeding in pediatric cases.

There is no high-quality evidence available showing that nutritional deficiencies directly cause vomiting blood.

Symptoms That May Occur With Vomiting Blood

Vomiting blood may occur with:

• Dizziness
• Fainting

Other symptoms that can appear alongside vomiting blood include:

• Lightheadedness
• Disorientation or confusion
• Severe abdominal pain
• Severe chest pain

Signs of shock, such as shallow breathing, confusion, or collapse, require immediate emergency care. If you experience any of these symptoms in addition to vomiting blood, seek emergency medical attention right away.

There is no high-quality evidence available linking vomiting blood directly with fatigue, shortness of breath, pale or clammy skin, or rapid heartbeat in the reviewed sources.

How Doctors Diagnose Vomiting Blood

Medical evaluation focuses on stabilization and identifying the bleeding source. Verified diagnostic steps include:

• Clinical assessment, including medical history and physical examination
• Blood tests, used to estimate blood loss, determine whether transfusion is needed, and assess liver function
• Endoscopy (gastroscopy), which allows direct visualization of the esophagus, stomach, and duodenum and often identifies the bleeding source

During evaluation, doctors will ask about the timing and appearance of the vomited blood, related symptoms, and any prior episodes. A detailed history of medication use—such as aspirin, anti-inflammatories, and blood thinners—will also be reviewed, as these can increase bleeding risk.

Endoscopy is often the most direct and efficient way to find the bleeding site and, if needed, treat it at the same time. During this procedure, a flexible tube with a camera is passed gently down the throat into the upper digestive tract. Sedation is typically given to help you relax and reduce discomfort. If the bleeding source is identified, tools can be passed through the endoscope to help stop the bleeding. In some cases, small tissue samples (biopsies) may be taken for further analysis.

There is no high-quality evidence available confirming routine use of imaging studies for initial diagnosis in the reviewed sources.

Treatment for Vomiting Blood

Treatment depends on the severity and underlying cause. Verified approaches include:

• Initial stabilization, including intravenous fluids and, if necessary, blood transfusions
• Endoscopic treatment, using instruments passed through an endoscope to stop active bleeding
• Surgery, in cases of severe or ongoing bleeding when other measures fail

If there are signs of significant blood loss—such as dizziness, fainting, or low blood pressure—doctors will focus first on stabilizing your condition with IV fluids, blood transfusions, and oxygen if needed. This initial phase is sometimes called resuscitation.

Once bleeding is controlled, further treatment focuses on the underlying cause. Most sources of upper digestive bleeding can be managed with medication, but more severe or persistent cases may require surgical intervention. After stabilization, your care team will address factors such as ulcers, varices, or medication side effects to reduce the risk of recurrence.

There is no high-quality evidence available supporting routine use of acid-reducing medications for all cases of vomiting blood.

Can Hematemesis Be Cured?

The outlook for hematemesis depends largely on its underlying cause. In many situations, prompt medical treatment can effectively stop the active bleeding—using methods such as endoscopic intervention or, in severe cases, surgery. Once the immediate danger is managed, addressing the root cause is essential to prevent recurrence.

Some causes, like a single peptic ulcer or a Mallory–Weiss tear, can often be healed completely, especially if contributing factors such as certain medications or excessive alcohol are eliminated. However, when hematemesis is the result of chronic conditions—such as advanced liver disease or cancer—cure may be more challenging, and the risk of further episodes remains.

Ultimately, recurrence is possible if the source of bleeding is not fully treated or controlled, underscoring the importance of thorough diagnosis and ongoing management tailored to each patient.

Possible Complications

If not treated promptly, vomiting blood can lead to:

• Severe blood loss
• Anemia
• Hypovolemic shock
• Organ failure

There is no high-quality evidence available directly demonstrating that early medical care always reduces these risks, although emergency evaluation is consistently recommended.

When to See a Doctor

Seek immediate medical care if you vomit blood. Authoritative guidance supports urgent evaluation because:

• Blood in vomit is never normal.
• Even small amounts may indicate a serious condition.
• Bleeding can worsen rapidly without warning.

Frequently Asked Questions

APA Reference List

American Cancer Society. (2025, July 17). Hematemesis (vomiting blood). https://www.cancer.org/cancer/managing-cancer/side-effects/low-blood-counts/hematemesis.html

Cleveland Clinic. (n.d.). Coffee ground emesis (vomitus): Causes, what it is & treatment. https://my.clevelandclinic.org/health/symptoms/23153-coffee-ground-vomitus

Cleveland Clinic. (n.d.). Vomiting blood (hematemesis): Causes, what it is & treatment. https://my.clevelandclinic.org/health/symptoms/17708-vomiting-blood

DeMarco, C. (2025, March 14). What is hematemesis? Vomiting blood, explained. MD Anderson Cancer Center. https://www.mdanderson.org/cancerwise/what-is-hematemesis–vomiting-blood–explained.h00-159774867.html

Lynch, K. L. (2024, February). Mallory-Weiss syndrome. MSD Manual Professional Edition. https://www.msdmanuals.com/professional/gastrointestinal-disorders/esophageal-and-swallowing-disorders/mallory-weiss-syndrome

Mayo Clinic. (n.d.). Gastrointestinal bleeding: Diagnosis and treatment. https://www.mayoclinic.org/diseases-conditions/gastrointestinal-bleeding/diagnosis-treatment/drc-20372732

MedlinePlus. (2024, October 30). Mallory-Weiss tear. https://medlineplus.gov/ency/article/000269.htm

MedlinePlus. (2025, January 24). Vomiting blood. https://medlineplus.gov/ency/article/003118.htm

MSD Manual Consumer Version. (n.d.). Esophageal varices. https://www.msdmanuals.com/home/digestive-disorders/gastrointestinal-bleeding/esophageal-varices

Patient.info. (n.d.). Vomiting blood (haematemesis): Causes and symptoms. https://patient.info/digestive-health/vomiting-blood-haematemesis

StatPearls Publishing. (2024). Upper gastrointestinal bleeding. In StatPearls (NCBI Bookshelf). National Center for Biotechnology Information. https://www.ncbi.nlm.nih.gov/books/NBK470300/