Diverticulitis is an inflammation and infection of the bowel caused by bacteria or fecal matter trapped in pouches in the intestine called diverticula. It is more common in older adults, males, and those with low-fiber diets and constipation. Symptoms include abdominal pain in the lower left quadrant radiating to the back along with nausea, vomiting, fever, and chills. Diagnosis involves blood tests, stool samples, imaging like CT scans, and colonoscopy. Treatment ranges from antibiotics and diet changes for uncomplicated cases to IV antibiotics, fluids, and possibly surgery for perforated or abscessed areas. Complications can include bowel perforation, bleeding, infection, and obstruction if not properly treated