For most people, a hiatal hernia by itself causes no symptoms.
Chest pain or pressure
Heartburn
Difficulty swallowing
Coughing
Belching
Hiccups
Pain: At times, a hiatal hernia causes chest pain or upper abdominal pain when the stomach becomes trapped above the diaphragm through the narrow esophageal hiatus.
Other causes: Rarely, with a fixed hiatal hernia, the blood supply is cut off to the trapped portion of the stomach, causing great pain and serious illness. This is called a strangulated hiatal hernia, and it is a true medical emergency.
Hiatal hernia also causes symptoms of discomfort when it is associated with a condition called gastroesophageal reflux disease, commonly called GERD. This condition is characterized by upwelling of stomach acids and digestive enzymes into the esophagus through a weakened sphincter that is supposed to act as a one-way valve between the esophagus and stomach. Hiatal hernia is thought to contribute to the weakening of this sphincter muscle.
Although it is true that hiatal hernia or GERD can cause chest pain similar to angina (or heart pain) including chest pressure that can radiate to the arm or neck, do not assume that such pain is caused by the less serious condition of the two. When in doubt, it is safer to be seen by a doctor immediately in order to rule out more serious problems first.
Circulatory System
Circulatory System, or cardiovascular system, in humans, the combined function of the heart, blood, and blood vessels to transport oxygen and nutrients to organs and tissues throughout the body and carry away waste products. Among its vital functions, the circulatory system increases the flow of blood to meet increased energy demands during exercise and regulates body temperature.