Final answer:
Diverticulitis is the painful inflammation and infection of pouches in the large intestine's wall, treated with antibiotics, bowel rest, and potentially surgery for severe cases.
Step-by-step explanation:
Diverticulosis is a condition where small pouches, called diverticula, form in the wall of the large intestine. When these pouches become infected and inflamed, the condition is known as diverticulitis. Diverticulitis can be particularly painful and its treatment generally involves antibiotics and bowel rest; in more severe cases, surgery may be necessary. A CT scan is often used to diagnose diverticulitis. Implementing a high-fiber diet is a key preventative measure to avoid the development of diverticulosis and subsequently, diverticulitis.