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Stomach

Here you can find information about diseases, symptoms, and health related to the stomach.

Click on a topic to learn more about what you are looking for.

Written by

Picture of Philipp Skafte-Holm
Philipp Skafte-Holm

Læge

Bjarne Lühr Hansen
Bjarne Lühr Hansen

Praktiserende læge, ph.d.

Last edited on March 24, 2026
Assessment of the sick

Click on the person where the problem is located.

Diseases

Appendicitis

Appendicitis is the most common cause of stomach pains. The pains begin in the upper part of the stomach or around the navel. Later, the pains move down under

Back Pains

Weak muscles and bad working position are the most common causes of back pains. You can often take care of back pains with medication bought over the counter

Blood in the Stool

Blood in the stool is caused by a haemorrhage from the intestine. Haemorrhoids, scratches, chronic intestinal inflammation and tumours in the intestine are the

Bloody Vomiting

Bloody vomiting affects both younger and older. The blood may be fresh red or resembling “coffee grounds”. The most common causes are gastric ulcers and

Constipation

Constipation is a very common condition. In most cases, constipation is low in fluid intake, lack of exercise, low fat diet or medicine side effect. You can

Cystitis

Cystitis appears as frequent and smarting urination. Drink plenty of fluid. Urination after intercourse can prevent cystitis from arising. Fever and chills can

Diabetes – Too low blood sugar

If you are in medical treatment for diabetes, your blood sugar may become too low. The first signs of low blood sugar are called sensation. When the blood

Diarrhoea and Vomiting

Fever, diarrhoea and vomiting indicate a gastrointestinal infection. Give the child plenty of fluid with salt, sugar and lactic acid bacteria. If the child is

Gallstone

Many people has gallstone without noticing it. A gallstone attack appears as pain in the upper right part of the stomach, just below the ribs, and vomiting.

Haemorrhoids

Haemorrhoids are so common that they can be characterised as a condition not an illness. Haemorrhoids are bulges of the mucous membranes of the intestine that

Influenza

It varies a lot how ill people become from influenza. Especially older people and people with a weak heart or smoker’s lungs become very ill. It is recommended

Injuries

Most frequently, adults get hurt on the workplace or when they do sports. It can be hard to determine whether a bone is broken, but if you can move normally

Irritable Bowel Syndrome

Irritable bowel syndrome is common and lifelong. The symptoms are stomach pains, a bloated sensation and varying defecations. You can soothe the pains with a

Kidney Stones

Kidney stones is a common illness that appears as pains in the loin, the side or in the bottom of the stomach. The pain is very strong and can cause nausea and

Pelvic Inflammatory Disease

Pelvic inflammatory disease can arise following an abortion or birth. However, also women with changing partner who do not use a condom have a risk of

Stomach Pains

There may be many causes of stomach pains. The most common causes of turns of stomach pains or stomach cramps are gastrointestinal infections (diarrhoea, vomiting and fever) or food poisoning (diarrhoea, vomiting without fever). As a starting point, a doctor should evaluate all who have stomach pains, unless the ill person knows his/her stomach pain […]

Waterbrashes, Heartburns and Stomach Ulcers

Waterbrashes and heartburns are very common. Ulcers, backflow of stomach acid into the oesophagus and an irritated stomach cause heartburns and waterbrashes.

Symptoms

Back Pains

Weak muscles and bad working position are the most common causes of back pains. You can often take care of back pains with medication bought over the counter

Blood in the Stool

Blood in the stool is caused by a haemorrhage from the intestine. Haemorrhoids, scratches, chronic intestinal inflammation and tumours in the intestine are the

Diarrhoea and Vomiting

Fever, diarrhoea and vomiting indicate a gastrointestinal infection. Give the child plenty of fluid with salt, sugar and lactic acid bacteria. If the child is

Stomach Pains

There may be many causes of stomach pains. The most common causes of turns of stomach pains or stomach cramps are gastrointestinal infections (diarrhoea, vomiting and fever) or food poisoning (diarrhoea, vomiting without fever). As a starting point, a doctor should evaluate all who have stomach pains, unless the ill person knows his/her stomach pain […]

Health

Overweight

Let us make it clear from the beginning. This is not another fancy article with fast shortcuts to weight loss. Neither is it another article that gives you a bad conscience. This article takes its starting point in the newest scientific research results and describes the cause of overweight together with the newest treatment of […]

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