"Cheng" (承), to receive or bear; "guang" (光), sunlight. The point is located on the top of head, where it "receives" sunlight, hence the name.

bubble_chart Location

Chengguang (BL6) acupoint
(adapted from "Meridians and Acupoints")

• Zhenjiu Jiayi Jing: "2 cun posterior to Wuchu (BL5)" (Lingshu Jingmai Yi suspects that Wuchu might be a miswriting for Qucha (BL4);
• Qianjin Yaofang and Suwen-Cire Wang Bing's annotation state "one cun";
• Tongren Shuxue Zhenjiu Tujing and Zhenjiu Zisheng Jing state "one cun and five fen". The current standard follows Tongren Shuxue Zhenjiu Tujing.

bubble_chart Anatomy

• Muscle: galea aponeurotica.
• Nerve: Lateral branch of frontal nerve (from the trigeminal nerve) and anastomotic branch of greater occipital nerve.
• Vessels: frontal artery and vein, superficial temporal artery and vein, and occipital artery and vein.

bubble_chart Manipulation

Subcutaneous insertion 0.3~1 cun along skin. Moxibustion is generally not applied.

bubble_chart Efficacy

Dispel wind and unblock orifice.

• Classical: wind-induced dizziness and headache, nausea with irritability, clear nasal discharge, nasal congestion with loss of smell, crooked mouth, blurred vision, eye nebula, glaucoma, poor vision.
• Modern: common cold, rhinitis, sinusitis.

bubble_chart Combinations

• Vomiting: Chengguang (BL6), Dadu (SP2).