- Abdominal pain
- Acid reflux
- Anal fissure
- Anemia
- Appetite loss
- Bloating
- Bowel incontinence
- Bowel obstruction
- Celiac disease
- Chronic mesenteric ischemia
- Clostridium difficile infection
- Constipation
- Diarrhea
- Diverticulitis
- Epigastric pain
- Feeding disorders
- Gallstones
- Gastric outlet obstruction
- Gastritis (Stomach inflammation)
- Gastroesophageal reflux disease (GERD)
- Gastrointestinal bleeding (GI bleeding)
- Gastrointestinal polyp
- Globus sensation
- Heartburn
- Helicobacter pylori (H. Pylori)
- Hemorrhoids
- Hernia
- Hiatal hernia
- Intestinal abscess
- Intestinal fistula
- Irritable bowel syndrome (IBS)
- Lactose intolerance
- Malabsorption syndrome
- Nausea
- Peptic ulcer disease
- Radiation enteritis
- Radiation proctitis
- Rectal carcinoid tumor
- Reflux laryngitis
- Small intestinal bacterial overgrowth (SIBO)
- Stomach ulcer
- Unintentional weight loss
- Vomiting
- Weight loss
- Colon cancer screening
- Colonoscopy
- Gastrostomy Tube (G Tube)
- Gastrostomy tube replacement (G-tube replacement)