Anguish

From On Cold Damage (伤寒论 shāng hán lùn). A feeling of heat and clamoring stomach. Because it is located in the pit of the stomach, it is also called anguish in the heart. It arises when, after exterior patterns have been treated by an inappropriate form of sweating or have been wrongly treated by draining-precipitation, the external evil enters the interior and lodges in the chest and diaphragm, thus harassing the stomach. In modern clinical practice, it is seen in febrile disease or in acute gastroenteritis.

Etymology

Chin 懊 ào and 憹 nóng both mean vexation, annoyance.