a condition in which stomach acid comes up from the stomach to the oesophagus (= the tube in the body that takes food from the mouth to the stomach), which can cause damage inside the body

If you frequently feel the need to clear your throat, you may have acid reflux.

Mild cases of heartburn and acid reflux can be treated by simple lifestyle changes. 心口灼热和酸水倒流这些症状在不严重的时候都可以通过改变生活方式缓解。

Compare: gastro-oesophageal reflux disease