Colitis

Colitis
A micrograph demonstrating cryptitis, a microscopic correlate of colitis. H&E stain.
Specialty	Gastroenterology

Colitis is swelling or inflammation of the large intestine (colon).^[1] Colitis may be acute and self-limited or long-term. It broadly fits into the category of digestive diseases.

In a medical context, the label colitis (without qualification) is used if:

• The cause of the inflammation in the colon is undetermined; for example, colitis may be applied to Crohn's disease at a time when the diagnosis is unknown, or
• The context is clear; for example, an individual with ulcerative colitis is talking about their disease with a physician who knows the diagnosis.