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Alternate names: 高盖 gāo gài, High Cover

Channel: BL, Foot Greater Yáng (tài yáng) Bladder Channel

Modern location: An acupoint located on the lower back, level with the inferior border of the spinous process of the second lumbar vertebra, 1.5 cùn lateral to the midline.

Classic location: One cùn and five fēn either side of the spine, below the fourteenth vertebra, at the level of the navel. The point is found in straight sitting posture. (Zhēn Jiǔ Dà Chéng)

Local anatomy: The posterior ramus of the 2nd lumbar artery and vein. Branch of the posterior ramus of the 1st lumbar nerve.

Action: Supplements the kidney; strengthens transformative action of qì; dispels water-dampness; strengthens the lumbar and spine; boosts water and invigorates fire; brightens the eyes and sharpens the hearing.

Modern indications: Enuresis; seminal emission; impotence; menstrual irregularities; vaginal discharge; deafness; tinnitus; water swelling; lumbar pain.

Classic indications: Vacuity taxation and emaciation; bloody urine; turbid urine containing semen; aching lumbus and cold knees; fullness in the rib-side; acute pain in the smaller abdomen; dispersion-thirst; cough, panting or scantness of breath; headache; genital pain; throughflux diarrhea (dòng xiè) and nontransformation of grain and water (undigested food in the stool); wind stroke deafness and paralysis of the limbs; rumbling intestines; accumulation of cold qì giving rise to taxation in females; emaciation in females due to intercourse during menstruation; alternating heat effusion and aversion to cold.

Needle stimulus: Needling: 0.5‒1.0 cùn perpendicular insertion. Moxa: 3‒7 cones; pole 10‒20 min.

Needle sensation: Distension and numbness, often spreading downward and outward and sometimes spreading over the buttocks and down the legs.

Point groups: Transport point (shù xué) of the kidney.

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