Sour taste or acid coming up into the mouth
A sour taste or acid coming up into the mouth, called acid regurgitation, happens when stomach acid flows backward into the oesophagus and throat. It often accompanies heartburn and is a key symptom of gastroesophageal reflux disease (GERD).
Conditions that commonly cause sour taste or acid coming up into the mouth
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Common Causes of Sour taste or acid coming up into the mouth
- Gastroesophageal reflux disease (GERD)
- Hiatal hernia
- Ovreating or lying down after meals
- Obesity
- Pregnancy
When to Seek Urgent Medical Care for Sour taste or acid coming up into the mouth
These signs may indicate a serious problem — don't wait, seek medical care right away:
- Acid reflux occurring more than twice a week
- Difficulty swallowing along with reflux
- Unintended weight loss
- Black or bloody stools
- Chest pain that could be confused with heart symptoms
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