Zhong Bai and Xia Bai
Star中白下白 (Zhōng Bái Xià Bái)
Master Tung Ching Chang, Tung's Extraordinary Points.
Points
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Distal; the principal point
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Proximal
Treatment Principle
Tonify the Kidney and strengthen the lower back through the Kidney territory of the opposite hand.
Indications
Method
Needle both, perpendicular, 0.5 to 0.8 cun, between the fourth and fifth metacarpals of the hand opposite the pain. Have the patient move the lower back during retention.
⚠ Cautions
Distinguish deficient-type aching from mechanical or inflammatory back pain before choosing this pairing over Ling Gu and Da Bai.
About
Where Ling Gu and Da Bai suit the acute, sharp, radiating presentation, Zhong Bai and Xia Bai suit the chronic ache of Kidney depletion — the back that is worse for standing, better for lying, and accompanied by fatigue.
Rationale
The fourth-to-fifth intermetacarpal space is Kidney territory in Tung's mapping, and the Kidney governs the lower back and the bones. The associated indications — tinnitus, nocturia, dry eyes, bone spurs — are the rest of the Kidney picture rather than separate uses.
Clinical Notes
Choosing between this pairing and Ling Gu / Da Bai is the practical question in most back cases. Sharp, radiating, movement-provoked pain takes Ling Gu; dull, constitutional, fatigue-associated ache takes Zhong Bai.
Sources
- Young, Wei-Chieh. Lectures on Tung's Acupuncture: Points Study. Blue Poppy Press.
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