While acid reflux and heartburn are related, they are not identical. Acid reflux is the backward flow of stomach acid into the esophagus, potentially causing various symptoms.
Heartburn, on the other hand, is a symptom of acid reflux characterized by a burning sensation in the chest. While heartburn is a common manifestation of acid reflux, not everyone with acid reflux experiences heartburn. Other symptoms can include regurgitation, chest pain, and difficulty swallowing. It's important to recognize that persistent heartburn could be indicative of gastroesophageal reflux disease (GERD), a more severe form of acid reflux. Seeking medical advice for a proper diagnosis and tailored treatment is advisable.
Reference:
1. Kahrilas, P. J., & Pandolfino, J. E. (2008). Gastroesophageal reflux disease and its complications. In Yamada's Textbook of Gastroenterology (5th ed., Vol. 1, pp. 859-895). Wiley-Blackwell. [https://doi.org/10.1002/9781444303254.ch58](https://doi.org/10.1002/9781444303254.ch58)
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