Diverticulitis

What is diverticulitis?

Infection in the diverticula, possibly caused by a hardened piece of faeces, is responsible for the inflammation that develops. When this happens - called diverticulitis - the pain is very severe and usually felt in the lower left side of the abdomen. A person will often feel feverish and have nausea and vomiting. They may pass blood rectally.

Someone with diverticulitis may be treated at home with painkillers, antibiotics, laxatives and dietary advice. Diverticulitis is often severe, and can need hospital treatment with antibiotics and fluids given through a drip. If the bowel perforates, become obstructed or bleeds heavily, then the situation becomes an emergency and an operation may be needed.

What causes it?

Over a lifetime, it's estimated the human gut digests more than 65 tonnes of food and drink. Much of this food will be low in fibre, putting the gut under strain.

One common result of this is diverticular disease, a condition affecting the large bowel, or colon, believed to be because of too little fibre in the diet. A diet low in fibre creates the ideal conditions for constipation to develop. When this happens, the pressure in the large part of the gut increases, which forces small parts of the gut lining outwards through the muscles surrounding the gut. This causes the lining to form small balloon-like pouches called diverticula.

Who is affected?

About 50% of adults over 50 are affected, and by the time they reach the age of 90 they will be affected anyway. Men and women are affected equally. Diverticular disease is very rare in countries such as Africa, where diets are high in fibre. In Western countries, where many people still don't eat enough fibre, it becomes more common as people get older.

How is it diagnosed?

Unless the diverticula become inflamed, many people won't have any symptoms. They may only become aware they have diverticular disease when it's found by chance during tests for another problem. Under these circumstances, to prevent future problems developing, it's advisable to increase the amount of fibre in the diet to avoid constipation.

What are the symptoms?

The most common symptom of diverticulitis is abdominal pain and the most common sign is tenderness around the left side of the lower abdomen. If infection is the cause, nausea, vomiting, feeling hot while having no temp, cramping, and constipation may occur as well. The severity of symptoms depends on the extent of the infection and complications. Diverticulitis can worsen throughout the day, as it starts as small pains and slowly turns into vomiting and sharp pains.

For many people, the diverticula don't cause any problems, but some people may need emergency surgery because the diverticula become inflamed. When the diverticula are not inflamed, symptoms tend to come and go. Episodic cramping, abdominal pain, bloating and excess wind are common. These are often accompanied by a change in normal bowel patterns, with constipation or diarrhoea, or both, alternating.

Dietary advice to increase the amount of fibre is essential. Increasing fluid consumption, becoming more active and always responding to your body's bowel movement signals lessen the chance of constipation. Antispasmodic medication, peppermint tea and painkillers are recommended for use when needed.