Crohn’s & Colitis Glossary

Fatigue

A feeling of extreme tiredness and exhaustion.

Fecal calprotectin

A stool test for intestinal inflammation that aids in predicting active disease.

Fecal microbiota transplantation (FMT)

A procedure to collect feces (also called stool or poop) from a healthy donor and introduce the collection into a patient’s gastrointestinal tract.

Fibrosis

Scarring or thickening of tissue.

Fistula

A tunnel starting from the intestine that connects to another area of the body (another area of the intestine, bladder, vagina, or skin).

Flare

When IBD symptoms reappear after a period of low or no activity. The symptoms can get worse over time or get worse suddenly.