What causes abdominal pain and black stool?

Abdominal pain and black stools may be caused by erosive gastritis, gastric ulcer, gastric cancer and other reasons.

1. Erosive gastritis

patients with gastric mucosa erosion, erosive surface by gastric acid stimulation will appear abdominal pain. Erosion surface may bleed, blood mixed with stools and oxidation, blood color becomes dark, so it will form black stools.

2. Gastric ulcer

patients with gastric ulcer or deeper ulcer formation ulcer, gastric acid has corrosive effect on ulcer surface, can cause abdominal pain.

3. Gastric

cancer cells infiltrate gastric mucosa, invasion of submucosal nerves, leading to abdominal pain. Cancer cells may invade blood vessels, causing blood vessel damage, bleeding, and iron in the blood will be converted into iron sulfide, doped in the stool, resulting in black stool.