In medicine, enteritis, from Greek words enteron (Small Intestine) and suffix -itis (Inflammation), refers to inflammation of the small intestine. It is most commonly caused by the ingestion of substances contaminated with pathogenic microorganisms. Symptoms include abdominal pain, cramping, diarrhea, dehydration and fever. Inflammation of related organs of the gastrointestinal system are:

• gastritis

stomach

• gastroenteritis

stomach and small intestine

• colitis

large intestine

• enterocolitis

large and small intestine