Diverticulosis is characterised by the formation of small pouches, known as diverticula, in the wall of the large intestine, particularly in the colon. It is a common condition, especially after the age of 40, and in most cases causes no symptoms, often being detected accidentally during routine examinations such as colonoscopy or a computed tomography (CT) scan.
Its development is associated with ageing, low-fibre diets, sedentary lifestyle, excess weight and, in some cases, the prolonged use of certain medications. Although usually asymptomatic, diverticulosis may progress to diverticulitis, a condition in which inflammation or infection of a diverticulum occurs. In such cases, common symptoms include abdominal pain, usually in the lower left quadrant, along with fever, nausea, changes in bowel habits and, at times, blood or mucus in the stools.
Diagnosis of diverticulosis is usually made by colonoscopy, while diverticulitis requires clinical evaluation and imaging tests, with CT scan being the method of choice. Treatment depends on severity. It may range from conservative measures with diet and antibiotics to surgical intervention in complicated cases, such as abscesses, intestinal perforation or peritonitis.
Prevention relies on a balanced, fibre-rich diet, adequate fluid intake, regular physical activity and maintaining a healthy weight. These measures help regulate bowel function and reduce the risk of inflammation.
Medical monitoring and early diagnosis are essential to prevent complications and preserve intestinal health. In case of symptoms, do not hesitate to contact your gastroenterologist at Grupo HPA Saúde.
25, September 2025
