Long-lasting disorders that cause irritation and ulcers in the gastrointestinal tract. The most common disorders are ulcerative colitis and Crohn

A condition in which intra-abdominal fat or part of the small intestine bulges through a weak area in the lower abdominal muscles.

Bands of fibrous tissue that can connect the loops of the intestines to each other, to other abdominal organs, or to the abdominal wall. These bands can pull sections of the intestines out of place… 

The bacteria, yeasts, and fungi that normally grow in the intestines and colon.

The inner surface lining of the intestines where the cells absorb nutrients.

A disorder that causes symptoms of blockage, but no actual blockage, such as constipation, vomiting, and pain. See obstruction.

The gut.

A reaction to a food, drug, or other substance.

A disorder that causes part of the intestines to fold into another part, causing blockage. It is most common in infants and can be treated with an operation.

Hemochromatosis.