Pain location: right lower quadrant, periumbilical, may radiate to the right flank

Aggravations: movement or coughing

Positive tests: right psoas sign, Rovsing test, Blumberg test, McBurney test

Which of the following abdominal disorders fits best with the given description?

Jen has been having issues digesting gluten throughout her life. Her doctors tell her that she has celiac disease, which is an autoimmune disease that is causing her immune system to attack the brush border of her __________, which then prevents absorption and causes illness when she consumes gluten.