Yin Yang Acupuncture Theory and Clinical Applications
Yin and Yang are the two interrelated forces which together with the concept of Qi form the foundation of eastern medicine. Yin and Yang are mutually exclusive and together form a whole which in balance constitutes a state of harmony and health and when out of balance indicates illness. From a medical perspective, the relationship between Yin and Yang form the general basis for all diagnoses and treatment protocols. A clinical example would be a person who has Liver Fire signs such as headaches, flushed face and anger. In this case the Yin Yang relationship may be 70% Yang and 30% Yin, leading to excessive Yang symptomology. The information below discusses the Yin Yang theory and clinical applications in detail.
Basics of Yin Yang Theory
Yin and Yang:
- Are opposite qualities
- Never exist in isolation: Everything contains both Yin and Yang aspects, even extreme Yang contains the seed of Yin and vice versa
- Never exist in a static 50-50 balance: While a theoretical ideal, in reality Yin and Yang are always in a dynamic relationship
- Are always spoken of in relative terms: Antartica's climate is more Yin than Alaska's and Mexico's climate is more Yang than Ireland's
- Are interdependent: One cannot exist without the other, they can be distinguished but not separated
- Are mutually consumptive: Extreme Yin (cold/wet) extinguishes Yang (fire), extreme Yang (fire) burns up Yin (water)
- Are mutually transformative: Extreme Yin ultimately transforms into Yang and vice versa
Yin Yang Relationships
Yin and Yang Pathological Relationships
Yin | Yang |
| chronic conditions | acute conditions |
| fatigue/tiredness | insomnia |
| dampness | dryness |
| cold/cool | hot/warm |
| lethargic | restless |
| underactive | overactive |
| weak musculature | tight musculature |
| lack of thirst | thirst |
| pale | red |
| soft | hard |
| curled up | stretch out |
| pale tongue | red tongue |
| empty pulse | full pulse |
Yin and Yang Constitutional Relationships
Yin | Yang |
| introvert | extrovert |
| calm quiet environments | stimulating energizing environments |
| prefers rest and balance | prefers socializing |
| lower blood pressure | higher blood pressure |
Yin and Yang Body Relationships
Yin | Yang |
| body | head |
| organs | surface |
| yin organs | yang organs |
| blood and fluids | qi |
| lower body | upper body |
| inside of limbs | outside of limbs |
| anterior | posterior |
Yin and Yang Organ Relationships
Yin | Yang |
| solid | hollow |
| store pure essences, vital substances (qi, blood, shen, jing) | no storage - transform, digest and excrete impurities |
| yin organs | yang organs |
Pathology and Clinical Applications of Yin Yang Theory
From a clinical perspective the theory of Yin and Yang is used to help determine the overriding factors involved in a particular condition. A condition is most likely to involve the Yin energies of the body if the problems are present or aggravated during the evening. Conditions such as insomnia and night sweats, for example, are often Yin related conditions. If the symptoms occur during the day, the condition is more likely to be related to the Yang energies of the body. Symptoms of Yang deficiency include fatique, weakness and lethargy.
In accordance with the general principles of Yin Yang theory, there are four general patterns of disharmony.
Pattern | Symptoms |
| Excess Yin/Full Cold 60% Yin - 50% Yang, Full Excess Yin | Cold limbs, weakness, contracture, pain improved with heat, pale tongue, slow pulse |
| Excess Yang/Full Heat 60% Yang - 50% Yin, Full Excess Yang | Restlessness, headache, irritability, pain worse with pressure, red tongue, full pulse |
| Yin Deficiency/Empty Heat 50% Yang - 30% Yin, False Excess Yang | Signs of heat but arising from a deficiency of Yin, night sweats, heat in the 5 palms, insomnia, red tongue, thin and rapid pulse |
| Yang Deficiency/Empty Cold 50% Yin - 30% Yang, False Excess Yin | Signs of excess cold but arising from a deficiency of Yang, fatigue, weakness, pain which improves with heat and pressure, pale tongue, slow and weak pulse |
Sources and More Information
The information on our site is drawn from our own lecture notes and clinical experience.
For a complete list of valuable resources, see our (TCM) Chinese Acupuncture Resources section. The most recommended texts are below:
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