Characterized as female and associated with darkness, wetness, and cold, yin energy deficiency causes a general dryness. Organs that are yin in nature are referred to as Zang and include:
- the pericardium
While the symptoms of yin deficiency will vary depending on the organ affected, generally they involve heat and dryness and may include:
- dry throat, mouth, lips, eyes
- dry cough
- thirstiness with an inclination to drink in small sips
- a tongue without coating and possible cracks
- low-grade fever
- hot palms, soles, and chest
- night sweats and hot flushes
- reddened face and cheeks
Since yin is cooling in nature, with a yin deficiency, the body begins to overheat. This is not a true heat being generated in the body, but what TCM identifies as “empty heat.” In other words, since yin is deficient, yang is predominant, which results in heat or dry symptoms in the body.
Acupuncturists will treat a yin deficiency by assessing which organs may be yin deficient and selecting points that will help nourish yin. At the same time, they relieve the symptoms that may be causing a negative feedback loop. Some of the common meridians for yin deficiency are found on the lower abdomen, legs, and feet. The kidney meridian is especially important in creating and maintaining yin.