What is the symptom of slight gastric bleeding?

The symptoms of mild gastric bleeding are dizziness, abdominal pain, black stool, etc. The specific analysis is as follows:

1. The

amount of bleeding in patients with dizziness is large, causing insufficient blood supply to the brain, causing hypoxia in the brain, resulting in dizziness.

2. The stomach of patients with abdominal pain is

stimulated due to gastric bleeding, resulting in convulsions in the stomach, resulting in abdominal pain.

3.

After bleeding in the stomach of patients with black stool, their blood will be decomposed by gastric acid, causing divalent iron ions in the blood to be oxidized into trivalent iron ions. When excreted through the intestinal tract, trivalent iron ions will undergo sulfurization reaction, resulting in black stool.