BL22 (Sān Jiāo Shū, “Triple Energizer Shu”) is the Back-Shu of Triple Energizer point of the Bladder Meridian. BL22 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the first lumbar vertebra (L1). It regulates water passages, resolves dampness, and harmonizes the Triple Energizer.
BL22 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the first lumbar vertebra (L1).
Oblique insertion medially 0.8-1.2 cun; caution for pneumothorax.
Regulates water passages, resolves dampness, and harmonizes the Triple Energizer.
Edema, abdominal distention, dysuria, vomiting, diarrhea.
As the Back-Shu point of the Triple Energizer, BL22 is crucial for regulating water passages and resolving dampness throughout the body. It is best known for its role in treating edema, urinary dysfunction, and abdominal distension, especially when related to impaired fluid metabolism. It also helps harmonize the Triple Energizer's functions, making it useful for conditions affecting the upper, middle, and lower Jiao. It is often combined with REN9 to enhance its diuretic and damp-resolving effects.
BL22 is one of 67 points on the Bladder Meridian. Nearby points:
BL22 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the first lumbar vertebra (L1).
BL22 regulates water passages, resolves dampness, and harmonizes the Triple Energizer. Common clinical indications include edema, abdominal distention, dysuria, vomiting, diarrhea.
Oblique insertion medially 0.8-1.2 cun; caution for pneumothorax. Caution: ⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.
BL22 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).