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Alternate names: 鬼信 guǐ xìn, Ghost Sincerity

Channel: LU, Hand Greater Yīn (tài yīn) Lung Channel

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

Classic location: On the inside of the thumb, about the width of a garlic chive leaf from the corner of the nail. (Zhēn Jiǔ Dà Chéng)

Local anatomy: The arterial and venous network formed by the palmar digital proprial artery and veins. The terminal nerve network formed by the mixed branches of the lateral antebrachial cutaneous nerve and the superficial ramus of the radial nerve as well as the palmar digital proprial nerve of the median nerve.

Action: Discharges heat and opens the orifices; returns yáng and stems counterflow; disinhibits the throat and settles tetany.

Modern indications: Painful swollen throat; cough; panting; nosebleed; heat effusion; pain and hypertonicity of the fingers; clouding reversal; mania and withdrawal.

Classic indications: Sweating and aversion to cold; swelling of the neck and throat impediment (hóu bì); throat moth in children; child fright wind; persistent nosebleed; strings and aggregations in males; mumps; toothache.

Needle stimulus: Needling: 0.1 cùn upward oblique insertion; bleed with a three-edged needle for wind stroke reversal or severe painful swollen throat.

Needle sensation: Localized pain.

Point groups: Well (jǐng) (wood) point; one of the thirteen ghost points.

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