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BL-4 Deviating Turn
曲差 〔曲差〕qū chā
Alternate names: 鼻冲 bí chōng, Nose Flush
Channel: BL, Foot Greater Yáng (tài yáng) Bladder Channel
Modern location: An acupoint located on the superior aspect of the head, 0.5 cùn within the anterior hairline and 1.5 cùn lateral to the midline.
Classic location: Above Eyebrow Ascension (BL-3) within the hairline, one cùn and five fēn each side of Spirit Court (GV-24). (Yī Zōng Jīn Jiàn)
Local anatomy: The frontal artery and vein. The lateral branch of the frontal nerve.
Action: Discharges heat and opens the orifices; clears the head and brightens the eyes.
Modern indications: Headache;
Classic indications: Headache;
Needle stimulus: Needling: 0.3‒0.5 cùn upward transverse insertion. Moxa: 3‒5 cones; pole 5‒15 min.
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