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What does internal bleeding poop look like?

Gastrointestinal (GI) bleeding is a symptom of a disorder in your digestive tract. The blood often appears in stool or vomit but isn't always visible, though it may cause the stool to look black or tarry. The level of bleeding can range from mild to severe and can be life-threatening.

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Overview

Gastrointestinal (GI) bleeding is a symptom of a disorder in your digestive tract. The blood often appears in stool or vomit but isn't always visible, though it may cause the stool to look black or tarry. The level of bleeding can range from mild to severe and can be life-threatening. Sophisticated imaging technology, when needed, can usually locate the cause of the bleeding. Treatment depends on the source of the bleeding.

Symptoms

Signs and symptoms of GI bleeding can be either obvious (overt) or hidden (occult). Signs and symptoms depend on the location of the bleed, which can be anywhere on the GI tract, from where it starts — the mouth — to where it ends — the anus — and the rate of bleeding.

Overt bleeding might show up as:

Vomiting blood, which might be red or might be dark brown and resemble coffee grounds in texture

Black, tarry stool

Rectal bleeding, usually in or with stool

With occult bleeding, you might have:

Lightheadedness

Difficulty breathing

Fainting

Chest pain

Abdominal pain

Symptoms of shock

If your bleeding starts abruptly and progresses rapidly, you could go into shock. Signs and symptoms of shock include:

Drop in blood pressure

Not urinating or urinating infrequently, in small amounts

Rapid pulse

Unconsciousness

When to see a doctor

If you have symptoms of shock, you or someone else should call 911 or your local emergency medical number. If you're vomiting blood, see blood in your stools or have black, tarry stools, seek immediate medical care. For other indications of GI bleeding, make an appointment with your doctor. There is a problem with information submitted for this request. Review/update the information highlighted below and resubmit the form. From Mayo Clinic to your inbox Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health. Email ErrorEmail field is required ErrorInclude a valid email address Learn more about Mayo Clinic’s use of data. To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. Subscribe! Thank you for subscribing! You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox. Sorry something went wrong with your subscription Please, try again in a couple of minutes Retry

Causes

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Esophageal varices Open pop-up dialog box Close Esophageal varices Esophageal varices Esophageal varices are enlarged veins in the esophagus. They're often due to obstructed blood flow through the portal vein, which carries blood from the intestine, pancreas and spleen to the liver. Hemorrhoids Open pop-up dialog box Close Hemorrhoids Hemorrhoids Hemorrhoids are swollen veins in your lower rectum. Internal hemorrhoids are usually painless, but tend to bleed. External hemorrhoids may cause pain. Gastrointestinal bleeding can occur either in the upper or lower gastrointestinal tract. It can have a number of causes.

Upper GI bleeding

Causes can include:

Peptic ulcer. This is the most common cause of upper GI bleeding. Peptic ulcers are sores that develop on the lining of the stomach and upper portion of the small intestine. Stomach acid, either from bacteria or use of anti-inflammatory drugs, damages the lining, leading to formation of sores. This is the most common cause of upper bleeding. Peptic ulcers are sores that develop on the lining of the stomach and upper portion of the small intestine. Stomach acid, either from bacteria or use of anti-inflammatory drugs, damages the lining, leading to formation of sores. Tears in the lining of the tube that connects your throat to your stomach (esophagus). Known as Mallory-Weiss tears, they can cause a lot of bleeding. These are most common in people who drink alcohol to excess. Known as Mallory-Weiss tears, they can cause a lot of bleeding. These are most common in people who drink alcohol to excess. Abnormal, enlarged veins in the esophagus (esophageal varices). This condition occurs most often in people with serious liver disease. This condition occurs most often in people with serious liver disease. Esophagitis. This inflammation of the esophagus is most commonly caused by gastroesophageal reflux disease (GERD).

Lower GI bleeding

Causes can include:

Diverticular disease. This involves the development of small, bulging pouches in the digestive tract (diverticulosis). If one or more of the pouches become inflamed or infected, it's called diverticulitis. This involves the development of small, bulging pouches in the digestive tract (diverticulosis). If one or more of the pouches become inflamed or infected, it's called diverticulitis. Inflammatory bowel disease (IBD). This includes ulcerative colitis, which causes inflammation and sores in the colon and rectum, and Crohn's disease, and inflammation of the lining of the digestive tract. This includes ulcerative colitis, which causes inflammation and sores in the colon and rectum, and Crohn's disease, and inflammation of the lining of the digestive tract. Tumors. Noncanerous (benign) or cancerous tumors of the esophagus, stomach, colon or rectum can weaken the lining of the digestive tract and cause bleeding.

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Noncanerous (benign) or cancerous tumors of the esophagus, stomach, colon or rectum can weaken the lining of the digestive tract and cause bleeding. Colon polyps. Small clumps of cells that form on the lining of your colon can cause bleeding. Most are harmless, but some might be cancerous or can become cancerous if not removed. Small clumps of cells that form on the lining of your colon can cause bleeding. Most are harmless, but some might be cancerous or can become cancerous if not removed. Hemorrhoids. These are swollen veins in your anus or lower rectum, similar to varicose veins. These are swollen veins in your anus or lower rectum, similar to varicose veins. Anal fissures. These are small tears in the lining of the anus. These are small tears in the lining of the anus. Proctitis. Inflammation of the lining of the rectum can cause rectal bleeding.

Complications

A gastrointestinal bleed can cause:

Shock

Anemia

Death

Prevention

To help prevent a GI bleed:

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