Yin Deficiency

**Definition:** In the YIN-YANG system of philosophy and medicine, an insufficiency of body fluid (called yinxu), manifesting often as irritability, thirst, constipation, etc. (The Pinyin Chinese-English Dictionary, 1979).

**Tree numbers:** - C23.550.972

**Synonyms:** - Yinxu - Deficiency, Yin - Yin Hsu - Yin Xu