Often pull black stool, is what disease

1, esophageal ulcer

patients serious condition, treatment is not timely, can cause esophageal bleeding, and then cause black stools.

2, Crohn's disease Crohn

's disease is considered to be related to environmental factors, genetic factors, immune disorders. The disease can cause lower gastrointestinal bleeding, and then cause black stools.

3, physiological factors

Recently eat too much iron-rich foods, such as red dates, pig liver, goose liver, etc., can lead to black stools, is a normal physiological phenomenon.

4, drug factors

Patients due to physical reasons using bismuth, iron and other drugs, can cause black stools. Generally after stopping medication, can return to normal.