Abdominal pain is a common experience that everyone goes through from time to time. It is also referred to as a stomach ache.

Abdominal bloating occurs when the gastrointestinal (GI) tract is filled with air. It is a common gastrointestinal complaint described as a feeling of fullness in the abdominal area.

Barrett’s esophagus is a condition where the lining of the esophagus changes, with the tissue becoming similar to that of the intestine.

Celiac disease is a condition in which a person develops inflammation, or swelling, damage to their intestine (gut) when they eat gluten.

Cirrhosis occurs when the liver is permanently scarred or injured by chronic conditions and diseases.

Colon polyps are growths that form on the lining of the colon or rectum. These growths can vary in size and shape, and it's possible to have more than one.

Colorectal cancer (also known as colon cancer) is cancer of the colon and/or rectum and occurs when a growth in the lining of the colon or rectum becomes cancerous.

Chronic constipation refers to infrequent bowel movements, hard or lumpy stools, and/or difficulty passing stool.

Crohn’s disease is when there is irritation in the intestines. This is a type of inflammatory bowel disease (IBD). It can affect anywhere from the mouth to the anus (end of the bowel).

Diarrhea is a common health problem that impacts 179 million people in the U.S. a year. Acute diarrhea lasts a short time, around one to two days, but may last longer, and then go away on its own.

Diverticulosis means having small pouches called diverticula in your intestines. These pouches can look like “pot holes” in the colon wall. Diverticulitis happens when a pouch gets infected or inflamed.

Eosinophilic esophagitis (EoE) is an inflammatory disease that affects the esophagus. It occurs when there are an increased number of eosinophils in the esophagus (the tube connecting the mouth to the stomach), without another known cause.

Gastroesophageal reflux (GER) occurs when stomach contents flow backward into the esophagus. Gastroesophageal reflux disease (GERD) is a chronic, more severe form of reflux in which symptoms occur frequently, cause discomfort, or lead to complications over time.

Gastritis is a general term used to describe inflammation of the stomach lining.

Gastroparesis is a chronic disorder which means delayed stomach emptying without a blockage.

Hemorrhoids are blood vessels in the rectum or anal canal. When these blood vessels become swollen or dilated, symptoms such as rectal bleeding can occur.

Hepatitis C is a viral infection that causes liver inflammation and damage.

A hiatal hernia happens when the upper part of the stomach bulges through the large muscle that separates the abdomen and the chest.

Irritable bowel syndrome (IBS) is a group of symptoms that occur together, including repeated abdominal pain and changes in bowel movements—such as diarrhea, constipation, or both.

An “ulcer” is an open sore. The word “peptic” means that the cause of the problem is due to acid. Most of the time when a gastroenterologist is referring to an “ulcer,” the doctor means a peptic ulcer.

Rectal bleeding refers to any blood that passes from your anus, though it is typically associated with bleeding from the lower colon or rectum.

Ulcerative colitis is a chronic inflammatory bowel disease (IBD) in which abnormal immune system activity causes inflammation and ulceration of the inner lining of the large intestine (colon and rectum).