Stomach discomfort, a feeling of hunger, nausea, vomiting. What's going on?

Stomach discomfort has a feeling of hunger, nausea and vomiting may be caused by indigestion, gastritis, gastric ulcer and other factors, the relevant explanations are as follows:

1. Indigestion

If patients often overeat, eat irregular, excessive consumption of spicy or greasy food, etc., resulting in increased burden on the gastrointestinal tract, causing indigestion

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