Why does acid reflux cause heartburn?

The stomach has a protective lining for its acidic contents, while the oesophagus is more easily irritated. A valve between them is meant to limit backward flow. If it relaxes or does not close fully, reflux can reach the lower oesophagus. The burning may rise toward the throat and can be accompanied by a sour taste or regurgitation. Heartburn is a very common presentation of Acid Reflux, although chest discomfort has several possible causes.

Consider what precedes your symptoms: a large meal, rich food, alcohol, smoking, bending, or lying down may be relevant. Eating smaller portions and remaining upright after meals may reduce reflux. Avoid wearing tight clothing around the abdomen if it seems to aggravate discomfort. A pharmacist can explain suitable non-prescription options and check for interactions with your regular medicines. Recurrent symptoms merit a clinician's review rather than repeated self-treatment alone.

Call emergency services for chest pressure, tightness, or pain with breathlessness, sweating, nausea, faintness, or pain that spreads to the arm, jaw, back, or shoulder. These symptoms need urgent assessment even if you have had heartburn before. Arrange a medical appointment for frequent symptoms, trouble swallowing, vomiting blood, black stools, persistent vomiting, or unplanned weight loss.

Ask whether your symptoms fit reflux, what personal triggers to address, and whether a medicine review or further test is appropriate.