Angina and Chest Pain. About 600,000 people come to emergency rooms each year with chest pains. Over 100,000 of these people are believed to actually have GERD. Chest pain from both GERD and from severe angina can occur after a heavy meal. In general, a heart problem is probably not responsible for the pain if it is worse at night and does not occur after exercise. It should be noted that the two conditions often coexist. In fact, there is some theory that in patients with coronary artery disease, acid reflux may actually trigger angina. In such cases, experts believe that acid in the esophagus may activate nerves that temporarily impair blood flow to the heart.
Asthma. Because asthma and GERD commonly occur together, physicians must be sure that each disorder is diagnosed accurately.
Other Diseases. Many gastrointestinal diseases (e.g., inflammatory bowel disease, ulcers, intestinal cancers) can cause GERD, but they are often easily identified, since they have other symptoms and affect other areas of the intestinal tract.
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