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Decryption of analyzes

Black feces in adults and children: values ​​and causes

Why are feces black?

Ensure the normal functioning of the human gastrointestinal tract, every second the metabolic processes occurring in the body - the breakdown of nutrients and the removal of their residues from the body through urine and feces.

Some substances have the ability to dissolve in a liquid and paint it in a different color range, leaving it unchanged.

If they are water soluble, they are displayed with urine, painting it in different colors. If the substance is fat soluble, it is removed with feces, painting them in the appropriate color, not excluding the feces of black.

The stool (feces) of a person is the end result of the processing of nutrients entering the body with food. Its color, composition, consistency and smell are the actual indicators of health status. Such signs were taken into account by the ancient eskulapas.

Other names of pathology - "melena" and "chernukha"


What are the symptoms of the appearance of black feces should alert?

Black feces in adults and children

Black feces in adults and children

Signs of black feces in an adult require special attention. This color of feces can be the result of the reaction of complex chromoprotein proteins and red blood cells with gastric juice (hydrochloric acid).

Therefore, the appearance of melena should be regarded as a distress signal to the body, indicating a malfunction in the gastrointestinal tract.

The smell of feces is also important, it can tell a lot:

  1. указывает на проблемы в желудочном пищеварении – ненормальном расщеплении белков (гнилостная диспепсия) или на хроническое воспаление толстого кишечника (язвенный колит). Putrid amber indicates problems in gastric digestion — abnormal protein breakdown (putrid dyspepsia) or chronic inflammation of the large intestine (ulcerative colitis).
  2. масла говорит о проблемах пищеварения – недостатке желчи в кишечнике или панкреатической секреции. The rancid smell of oil speaks of digestive problems - lack of bile in the intestines or pancreatic secretion.
  3. запах фекалий свидетельствует о наличии одной из форм диспепсий. The pronounced sourish smell of feces indicates the presence of a form of dyspepsia.

Therefore, when melena appears, the reason for such a transformation should be clarified. It is possible that they will be completely harmless, due to the use of pigment-containing products or provocative drugs.

In addition, the cause of black feces is often caused by a multitude of chronic pathologies, the symptoms of which are manifested by a change in the color of the feces.

The main factor in determining one or another reason is a person’s well-being.

If the presence of pathology does not cause anxiety and health is normal - in most cases these are traces / reactions to food, or to the use of provoking medications.

If the darkening of the feces is accompanied by:

  • stomach pain;
  • heartburn and hyperthermia;
  • signs of intoxication (vomiting or nausea);
  • diarrhea or constipation (constipation);
  • flatulence and anemia.

You can safely suspect the ulcerative pathology of the initial segment of the jejunum and stomach, the development of hepatitis or cirrhosis.

When is the cause of black feces a disease?

When is the cause of black feces a disease? If melena appeared suddenly, the cause should be sought in the digestive tract system. In many diseases, black feces are the main symptom of the disease.

The reason for this color can be:

  • ulcerative intestinal pathologies;
  • tumoral processes in the stomach;
  • varicose vascular disease and inflammatory processes of the lining of the esophagus;
  • acute lymphoblastoid leukemia;
  • dystrophic-inflammatory processes in the gastric mucosa;
  • inflammation of the colon and small intestine;
  • deep mycoses and helminthiasis;
  • black feces and pain in the epigastric zone talk about ulcerative lesions of the stomach.

Contribute to the manifestation of the disease internal bleeding. Under the action of the reaction of gastric secretions and hemoglobin, the red cells are converted into dark pigments - hematins.

Intensive transformation of feces into a shiny dark color contributes to the breakdown of malignant tumors in the intestinal lumen, causing internal bleeding.

Effect of nutrition and medications on stool darkening

A change in fecal staining is not always indicative of disease. When eating foods with a high content of iron, black feces - a common phenomenon that does not cause any health problems.

Such symptoms manifest when excessive consumption of dishes from beets or blood (blood sausages), red grapes and red wines.

Black spots in feces may appear during partial digestion of various stone fruit (kiwi, raspberry, currant, etc.).

Some medications cause staining of feces:

  1. Iron-containing drugs prescribed for hematological syndrome (development of anemia);
  2. Vitamin complexes and bismuth containing drugs.
  3. Enterosorbing drugs.
  4. Long-term use of salicylate-based painkillers. The long-term effect on the circulatory system causes the development of internal bleeding - a possible cause of black feces with blood.
  5. Taking antibiotics. In the treatment of gastrointestinal pathologies, antibiotics can provoke the formation of black and green feces. This contributes to a large accumulation of inflammation in the foci of dead white blood cells.

Diarrhea black (diarrhea)

Diarrhea black (diarrhea)

diarrhea black color photo

Such a diarrhea can be provoked by a variety of reasons, both products and medicines. Only the liquid consistency of the feces is caused by the inconsistency of the gastrointestinal tract to quickly remove harmful provocative substances from the body.

The appearance of liquid blackened feces, is the response of the body. Sometimes, this contributes to a sharp change in the usual diet or prolonged poisoning of the body with fusel oils of poor-quality alcoholic beverages. All this can be quickly corrected by yourself at home.

But very often, suddenly blackened liquid feces can appear as a clinical symptom of intracavitary bleeding, due to:

  • ulcerative erosions and varicose lesion of blood vessels at the site of pathology;
  • intestinal diseases and tumor processes in it;
  • pathologies of the biliary tract;
  • polypous formations ;
  • damage to the polyp of the rectum or other parts of the intestine;
  • viral and bacterial infections that change the color of feces to black and green feces.

The appearance of black liquid feces is a sure sign of exacerbation in the presence of diseases: ulcers, hepatitis, cancer, or open internal bleeding after surgery of the stomach or intestines.

In this case, diarrhea is accompanied by:

  • scarlet or dark vomiting:
  • pallor and vertigo;
  • hypotension and the development of anemia;
  • intense paroxysmal abdominal pain;
  • rotten belching is evidence of the progression of the process.

If such a condition lasts more than two days, it is not worth delaying; it is necessary to immediately consult a doctor.

Black feces in pregnant women

The manifestation of black feces in pregnant women is a common phenomenon. This is facilitated by the intake of various vitamin complexes enriched with iron, which are often attributed to pregnant women to maintain the body.

In addition, the predilection of women during this period for vegetables, fruits and berries containing iron is a known fact. There is no harm from this, the state of health does not deteriorate and you should not worry.

Caution should be given to women who have a history of diseases associated with chronic pathologies of the gastrointestinal tract. Then, staining of faeces in dark colors can be the result of inflammation of the gastric mucosa or ulceration.

It is impossible not to notice, as the state of health sharply worsens, vomiting and upset stool appears. An urgent need to seek medical attention.

Melena in children

Melena in children

Melena in children

Newborn babies are exposed to the true and false form of the disease.

In the first case , the black feces in a child manifest as a result of hemostasis (poor blood clotting), accompanied by bleeding from the umbilical cord, subcutaneous hemorrhage, conjunctiva, etc.

In the second case , changes in feces are preceded by ingestion of blood during childbirth, sucking cracked nipples, or damage to the mucous membrane of the nose or mouth.

In older children, the pathological change of fecal masses to a dark color is the main symptom of incomplete bleeding bleeding of the Mikkeleva diverticulum. The exit of blood can be massive, provoking a sharp development of anemia.

To provoke bleeding can:

  • presence of a diaphragmatic hernia;
  • the defeat of the veins of the esophagus varicose veins;
  • infectious-allergic vascular pathology;
  • gastritis and intestinal and gastric ulcers.

The child must be urgently hospitalized. Until the causes of bleeding are clarified, he cannot eat anything. Allowed only short sips of cold water.

What to do when darkening of feces and when to go to the doctor?

What should not be done is to self-diagnose the disease and self-medicate.

If black feces does not affect the general state of health, watch a couple of days how the situation will change with the exclusion of provocative factors. Otherwise, you should seek qualified assistance.

Immediate consultation is required if there is a history of:

  • irreversible processes in the liver (cirrhosis);
  • diffuse liver pathologies (hepatitis);
  • iron deficiency anemia;
  • ulcerative pathology of the digestive tract;
  • malignant neoplasms in the digestive tract.

If symptoms are accompanied by vomiting and hyperthermia, lethargy, weakness and indifference to food. Timely identification of the cause, can protect against the development of oncological processes in the intestine.


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