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Alternate names: 窍阴（足） qiào yīn (zú), Orifice Yin (foot)

Channel: GB, foot lesser yáng (shào yáng) gallbladder channel

Modern location: An acupoint located a little more than 1 fēn below the base of the nail on the lateral side of the fourth toe.

Classical location: On the outer side of the toe next to the little toe, the width of a garlic chive leaf away from the corner of the nail. From The Great Compendium of Acupuncture and Moxibustion (针灸大成 zhēn jiǔ dà chéng)

Local anatomy: The arterial and venous network formed by the dorsal digital artery and vein and plantar digital artery and vein. The dorsal digital nerve.

Action: Extinguishes wind and courses the liver and gallbladder; clears heat and drains fire.

Modern indications: Headache; painful red swollen eyes; deafness; painful swollen throat; febrile disease; insomnia; rib-side pain; cough counterflow; menstrual irregularities.

Classical indications: Cough; cramp in the limbs; eye pain; throat impediment (hóu bì); headache; heart vexation; dry curled tongue; deafness; menstrual irregularities; pain and swelling of the dorsum of the foot; pain in the outer canthus.

Needle stimulus: Needling: 0.1‒0.2 cùn oblique insertion. Moxa: 2‒3 cones; pole 3‒5 min.

Point groups: Well (jǐng) (metal) point.

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