What's the reason?

All-time upset stomach generally refers to diarrhea, which may be caused by irritable bowel syndrome, ulcerative colitis, atrophic gastritis and other diseases.

1. Irritable bowel syndrome

Visceral hypersensitivity, gastrointestinal dynamics abnormalities, nervous system abnormalities, intestinal infections, etc. may cause irritable bowel syndrome, leading to intermittent diarrhea.

2. Ulcerative colitis

Immune factors, genetic factors, intestinal microecology, etc. may cause ulcerative colitis, frequent diarrhea.

3. Atrophic gastritis

Helicobacter pylori infection, duodenal reflux, gastric mucosal damage factors, autoimmune mechanisms and genetic factors may cause atrophic gastritis, frequent diarrhea symptoms.