Heartburn is a symptom of acid reflux, where digestive acids and food flow back up the esophagus, causing discomfort.
Frequent heartburn lasting more than a few hours may indicate a more serious condition like GERD, causing chronic symptoms and potential esophageal damage.
GERD symptoms include persistent heartburn, regurgitation of food, difficulty swallowing, and feeling like food is stuck in the esophagus.
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