Black Stool Diarrhea : Causes and What You Should Do

When you notice that you have black stool diarrhea, internal bleeding may be your very first concern. The black tarry diarrhea could be the sign of bleeding in the upper digestive tract, also often referred to as upper GI (gastrointestinal) bleeding. This means the bleeding that happens in the upper part of small intestine, food pipe, or stomach. With such a bleeding, the blood must travel for at least 25 ft. before showing up in the diarrhea. As it goes down the pipe, blood will turn darker and darker after being digested; hence it comes out eventually as black diarrhea.

What Are the Black Stool Diarrhea Cause?

Black Stool Diarrhea : Cause And What To Do
Even so, the black stool diarrhea can also have different causes, which will depend on where the bleeding is from. Locations may range from anywhere, from the mouth or nose to the colon. The black diarrhea in adults or children that is caused by bleeding is also called as melena. Other causes behind this issue also include drugs, toxins, and foods. Below the answer of “why is my diarrhea black” if it happen to you.

1. Foods

Certain foods can be the diarrhea black stool causes, such as dark colored vegetables and fruits (blackberries, beets, blueberries, etc.). Deserts such as black pudding and black licorice and also bloody meats can also cause this problem.

2. Minerals, toxins, and medicines

If you take iron supplements to treat your conditions of low iron, such as anemia, this can also be the source of your black diarrhea. On the other hand, your problem can also be caused by charcoal, which is sometimes given to help treat toxin ingestion by binding to some drugs in your GI tract. Pepto Bismol, containing bismuth, is also the possible reason behind your symptom, so is Maalox. Meanwhile, your symptoms can also be triggered by the toxic mineral lead, such as lead paint if you live in older houses.

3. Esophageal, oral, and nasal bleeding

In black stool and diarrhea, the brisk bleeding from the nasal or oral cavities, such as in a nose bleed, can also be swallowed into your GI tract, causing melena. Bleeding from esophagus itself may be caused by several sources, such as inflammation or esophageal ulcers due to reflux of acid into from stomach to esophagus or the infections. The tear in your esophagus, called Mallory-Weiss tear, from vomiting and retching after drinking alcohol excessively will also cause black stool diarrhea. Dilated veins in your esophagus, called esophageal varices, are usually from liver cirrhosis and dangerous since they may lead to a brisk bleeding into your gastrointestinal tract.

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4. Stomach bleeding

Ulcers in your stomach also can bleed, thus causing the black stool diarrhea. There are various sources of ulcers, such as cancers, infections, and stomach acid. Another cause of melena is angiodysplasia, a blood vessels malformation that can bleed. General inflammation of stomach, also known as gastritis, might be the what causes black diarrhea although it’s however still a more rare cause of bleeding.

5. Small Intestine bleeds

Ulcers can also be developed by your small intestine, usually in the duodenum or the first part of the small intestine located near your stomach. An infection with Helicobacter pylori, bacteria, is the most common cause of a condition called duodenal ulcer, eventually leading to the small focus of your intestine’s stomach tissue. This results in bleeding in your small intestine and, finally, black stool diarrhea also known as Crohn’s disease. This type of inflammatory disease can erode the tissues of your bowel wall.

6. Large intestine bleeds

Although this is more often known to be the cause behind frank blood in your stool, this can also be the cause of black stool diarrhea. It is especially true if the bleeding is both ongoing and slow.
About Black Diarrhea and Stomach Pains

What Black Stool Diarrhea Symptoms?

You may have black diarrhea one day after feeling pain in your stomach, especially during the night. The pain is typically a burning sensation in the middle of the stomach, right below the chest. The pain is also followed by nausea although you do not vomit. And the morning after, you wake up feeling fresh and need to have a bowel movement only to notice that you also have black stool diarrhea. There are no other symptoms that follow.

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That, apparently, is common among patients with GI bleeding caused by stomach ulcer. If it isn’t a massive bleeding, the blood in the stomach may make you only nauseated. Vomit blood doesn’t always come along with this symptom of black stool diarrhea. The blood moves down the GI tract slowly and may stop after about an hour on its own. The black diarrhea, however, isn’t noticed until certain time has passed.

What To Do With Black Diarrhea?

Going to ER is still required during this condition so you can receive any black stool diarrhea treatment, especially considering that you may still start to bleed later. Plus, you have no any idea how much blood you’ve already lost as well. During this situation, the black stool diarrhea may be the tip of the iceberg, with the rest of the blood lost still inside the GI tract. As you lose blood or black liquid diarrhea, you lose blood volume first.

Even though the concentration of thrombocyte in the blood remains the same at first, note that you have about 2.9 gallons of water in your body, in a space called extracellular space. The space can be found between the organ cells and blood vessels and water can easily flow in and out between this space and blood vessels. It takes up to 24 hours for the extracellular fluid to restore the volume of blood you have lost. This is when your blood turns dilute as the blood volume is finally replaced. That being said, the number of thrombocyte in every ounce of the blood will lower, resulting in anemia.

Get Help as Soon as Possible

If you have black stool diarrhea, it’s best to get help right away. The more quickly you seek for medical help, the more likely it is for you to get a good outcome. Once you finally notice the change of color and consistency in your stool, it’s always best to remain calm and go visit ER for help.

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