What causes diarrhea to come out black?

Black stool should be referred to here, diarrhea usually refers to diarrhea, diarrhea pulled out black stool may be caused by dietary factors, bacterial enteritis, rectal polyps and other reasons.

1, dietary factors

patients eat too much meat and cold food, due to the gastrointestinal mucosa stimulation, promote its peristalsis caused diarrhea, and the iron in meat is oxidized into black, with stool discharge, can cause black stool phenomenon.

2, bacterial enteritis

patients intestinal mucosa infection bacteria inflammation reaction, due to inflammation stimulation gastrointestinal dysfunction, intestinal mucosa damage bleeding, causing the above symptoms.

3, rectal polyps

if patients because of genetic factors, inflammation stimulation and other reasons appear rectal polyps, due to polyp surface damage bleeding, and polyps on adjacent tissues caused by oppression, can also appear diarrhea pulled out black stool symptoms.