Colitis refers to the inflammation of the inner lining of the colon and is used in medical contexts. Her chronic abdominal pain was attributed to colitis.
Pro Tip 2/3
Not Contagious
Colitis is a medical problem, not an infectious disease, so it can't spread from person to person. Even though her roommate has colitis, Jenna was not at risk of catching it.
Pro Tip 3/3
Seriousness
Colitis can be serious and may need medical treatment. It's not used lightly in conversation. After dealing with colitis for months, Marco finally saw a specialist.