Inflammation of the oesophagus (gullet). Frequent regurgitation of acid and peptic juices from the stomach causes reflux oesphagitis, the commonest form, which may be associated with a hiatus hernia. The main symptoms are heartburn regurgitation of bitter fluid, and sometimes difficulty in swallowing; complicatioins include bleeding, narrowing (stricuture) of the oesophageal canal and ulceration. it is treated by antacid medicines, weight reduction, and avoidance of bending; in severe cases surgery may be required.