Strong, hard; between, middle. The occipital bone is very hard, and the acupoints are in it, hence the name.

[Location]

Qiangjian (GV18) acupoint
(quoted from "Meridians and Acupoints")

• Zhenjiu Jiayi Jing: "One inch and five minutes after Houding (GV19)";
• Yizong jinjian >: "Naohu (GV17) is one inch and five cents above".

[Anatomy]

• Muscle: galea membrane.
• Nerve: branches of the greater occipital nerve.
• Vessel: anastomotic network of left and right occipital arteries and veins.

[Manipulation]

Subcutaneous insertion 0.3~0.5 inches. Direct moxibustion is prohibited.

[Efficacy]

Clear the boss, dispelling wind evil.

• Classical: brain spinning, eye movement, headache, irritability, vomiting, drooling, stranguria, epilepsy, shaking head, crooked mouth, tears.
• Modern: insomnia, hysteria.

[Recipe]

• headache is difficult to ban: Qiangjian (GV18), Fenglong (ST40).
• Trouble: Baihui (GV20), Qiangjian (GV18), Chengguang (BL6).