Retching (also known as dry heaving) is the reverse movement (retroperistalsis) of the stomach and esophagus without vomiting. It can be caused by bad smells or choking, or by withdrawal from certain medications, or after vomiting has completed.
Retching (also known as dry heaving) is the reverse movement (retroperistalsis) of the stomach and esophagus without vomiting. It can be caused by bad smells or choking, or by withdrawal from certain medications, or after vomiting has completed.
Source: Wikipedia "Retching" · CC BY-SA 4.0
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