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BL-6 Light Guard

承光 〔承光〕chéng guāng

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

Modern location: An acupoint located on the superior aspect of the head, in a depression 2.5 cùn within the anterior hairline and 1.5 cùn lateral to the midline.

Classic location: One cùn and five fēn behind Fifth Place (BL-5). (Zhēn Jiǔ Dà Chéng)

Local anatomy: The anastomotic network of the frontal artery and vein, the superficial temporal artery and vein and the occipital artery and vein. The anastomotic branch of the frontal nerve and the great occipital nerve.

Action: Clears heat and eliminates vexation; brightens the eyes and opens the orifices.

Modern indications: Headache; dizzy vision; nasal congestion; febrile disease.

Classic indications: Absence of sweating in febrile disease; retching and vomiting; heart vexation; loss of smell; nasal congestion with copious snivel; eye screens; wind dizziness; deviated mouth.

Needle stimulus: Needling: 0.3‒0.5 cùn backward transverse insertion. Moxa: pole 2‒5 min.

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