Reflux oesophagitis
Usually the problem is caused by reflux oesophagitis, which is brought on by stomach acid that has moved up to the gullet. This usually feels like heartburn or leaves a taste of bile in the mouth. Reflux oesophagitis can be caused by the opening of the muscle around the top of the stomach, or because the stomach is being pushed due to pregnancy or obesity. Drinking coffee and eating citrus fruits, fatty foods, onions, alcohol and chocolate often makes the condition worse as these encourage the muscle at the top of the stomach to relax.

Ulcers
Ulcers have similar symptoms and are, therefore, sometimes mistaken for reflux oesophagitis. If symptoms include weight loss and black stools it is important to contact a doctor, who can determine whether or not the condition is caused by an ulcer. In 9 out of 10 cases an ulcer is caused by a bacteria called Helicobacter pylori. This bacteria can be treated with an antiulcer medicine and antibiotics, which also reduces the risk of contracting new ulcers.

Irritable bowel syndrome
Another cause could be irritable bowel syndrome, which often appears as a pain that gets worse when eating, and is helped by going to the toilet. An irritated large intestine occurs when there is a change of movement in the intestines. It usually helps to drink a lot of water and go to the toilet regularly.