Diverticulitis: symptoms and care in Luxembourg

Diverticulitis is the inflammation, sometimes infection, of small pouches — diverticula — that form along the wall of the colon. These diverticula themselves are extremely common after age 50 and entirely harmless as long as they stay silent: this is called diverticulosis, a simple anatomical feature, not a disease. The problem starts when one of these diverticula becomes inflamed. Fever combined with pain in the lower abdomen, on the left side, should prompt a prompt consultation. In Luxembourg, a gastroenterologist confirms the diagnosis and manages care, alongside the general practitioner.

Very common pouches after 50

With age, the colon wall loses some of its flexibility, and small herniations of the lining can form through the muscle layer, creating these pouches called diverticula. It is such a common phenomenon that a large share of people over 60 are estimated to have them, without ever knowing or suffering from them. Diverticulosis, most often discovered by chance during a colonoscopy done for another reason, needs no specific treatment in itself: it is not "cured", at most it is monitored, and above all it should not cause worry.

What changes everything: inflammation

Diverticulitis occurs when a diverticulum becomes inflamed, sometimes because it gets locally obstructed, allowing bacteria to multiply and cause infection. The typical picture combines pain often located in the lower left abdomen — where the most commonly affected part of the colon sits —, fever, and sometimes changes in bowel habits or nausea. This combination of fever and localised abdominal pain is not trivial: it warrants a same-day consultation rather than waiting for it to "pass" like an ordinary stomach ache.

How care unfolds

Diagnosis relies on a clinical examination, a blood test looking for signs of infection, and most often an abdominal CT scan, which confirms the inflammation and assesses its severity. Colonoscopy is never performed during the acute phase — it could worsen the situation — but is usually offered a few weeks later, once the inflammation has settled, to check the state of the colon and rule out another cause. Depending on severity, diverticulitis is treated on an outpatient basis, with temporary dietary rest and medical treatment, or requires hospital admission in case of a complication such as an abscess or perforation, rarer but never to be dismissed.

Prevention through fibre, and the myth about seeds

For a long time, people were advised to avoid seeds, nuts and corn for fear they would lodge in the diverticula and trigger inflammation. More recent studies have not confirmed this link: this restriction is now largely abandoned, and there is no reason to avoid these foods as a precaution. What genuinely helps prevent episodes, however, is a fibre-rich diet — fruit, vegetables, whole grains —, good hydration and regular physical activity, which promote smooth bowel movements and reduce pressure on the colon wall.

Signs that need urgent attention

Severe, worsening abdominal pain, high fever, vomiting that prevents staying hydrated, or a belly that becomes hard and very tender to the touch are signs of a possible complication. In these situations, do not wait: call 112 or go to the emergency department, as a perforation or an abscess needs prompt care.

Care in Luxembourg

The general practitioner generally refers to a gastroenterologist at the first suggestive signs or in case of recurrence. The gastroenterologist confirms the diagnosis, adjusts treatment and schedules the follow-up colonoscopy once the flare has settled. Consultations, imaging and treatment are covered by the Caisse nationale de santé under the usual rules, detailed on cns.lu. Most simple cases of diverticulitis heal well with appropriate treatment, but regular digestive follow-up remains useful to limit recurrence.

What everyday life looks like afterwards

Once an episode has settled, there is generally no need for a permanent restrictive diet. Most people return to a normal diet within a few weeks, gradually reintroducing fibre-rich foods rather than all at once. Staying attentive to bowel habits and hydration, without becoming anxious about every twinge of discomfort, helps strike the right balance. Anyone who has already had one episode should know the warning signs well, so that a possible recurrence is caught and treated early rather than left to worsen.

A note on age and risk

While diverticulitis becomes more common with age, it is not exclusive to older adults: younger people, including those under 50, can also develop it, sometimes with a more aggressive course that warrants closer attention. Age alone should never be a reason to dismiss suggestive symptoms as unlikely, nor a reason for a younger person to assume abdominal pain cannot be diverticulitis.

A note on returning to normal activity

Once treatment is complete and symptoms have settled, most people can resume normal daily activity fairly quickly, though it is sensible to ease back into strenuous exercise rather than returning at full intensity immediately. There is no need for permanent activity restrictions after a simple, uncomplicated episode has healed.