Heartburn is caused by reflux, a condition in which the contents of the stomach and sometimes the small intestine are able to back up into a person's esophagus. Heartburn may also be called indigestion, sour stomach or pyrosis.
Definition
"Heartburn" usually refers to a burning, warm, hot or painful feeling just behind and sometimes beneath the breastbone. Other symptoms of heartburn may include burping, nausea and bloating. These symptoms may get worse if you lie down, lift something heavy or bend over soon after eating.
Symptoms
Severe symptoms that may result from continuing heartburn include weight loss, bleeding and trouble swallowing.
Duration
Heartburn symptoms may last for two hours or longer.
Triggers
According to the University of Michigan, heartburn symptoms may trigger sleep problems, coughing, wheezing, choking or asthma attacks.
Heart Disease
While mild, occasional heartburn is usually no cause for concern, heartburn is sometimes a symptom of heart disease.
Warning Signs
When heartburn is accompanied by other symptoms, such as abdominal pain and vomiting blood, it may signal a serious or even critical condition requiring a doctor's attention immediately.


