In a hiatus hernia, a part of the stomach pushes up through a hole in the diaphragm, which is the muscle that separates the chest from the abdomen. Find out more about hiatus hernia.
A hernia occurs when tissues or organs bulge through a weak point in the wall of the abdomen (belly muscles). Here is information about hernia symptoms and treatment.
Learn more about symptoms and treatments for gastro-oesophageal reflux disease (GORD), which is caused by stomach acid leaking into the oesophagus.