Any reaction to the gastrointestinal bleeding?

Symptoms include abdominal pain, melena, hematemesis, etc.

1. Abdominal pain

may cause abdominal pain or discomfort when gastrointestinal bleeding. The nature of pain may be dull pain, swelling pain, colic, etc., and the degree and duration may vary.

2. Melena

gastrointestinal bleeding will lead to black or tarry stool, which is caused by the oxidation of iron in the blood after digestion in the gastrointestinal tract.

3. Hematemesis

If the amount of bleeding is large, blood can be discharged through the mouth, showing hematemesis. Hematemesis is generally dark red or brown, and sometimes may be bright red.