LOCATION
2.5 cun behind the hairline, in line with the pupil.
Features
Meeting point of Gallbladder Meridian and Yangwei Vessel.
Body Inches (cun)
Each person has his/her own personal body inches.
One cun is equal to the width of the Knuckle of the thumb.
Nerves, vascular
The anastomotic branch of the frontal nerve and the greater occipital nerve, the top branch of the superficial temporal artery and vein, and the anastomotic network of the occipital artery and vein.
Indication
Headache，vertigo，dizziness，fainting；toothache，optic atrophy；vomit. Clears Heat and Regulates the Gallbladder. Headache, Dizziness.
Combinations
Migraine：GB 17 & GB 20 & ST 08 & TE 05.
Vertigo，dizziness，fainting：EX-HN3 & EX-HN5 & GB 17 & GB 20.
dizziness，vomit：GB 17 & GB 20 & PC 06 & EX-HN3.
Clenching of the teeth，toothache：GB 17 & ST 06 & ST 07 & LI 04.
穴位
在頭部，當前髮際上2.5寸，頭正中線旁開2.25寸。
特點
交會穴，通陽維脈。
同身寸
針灸取穴比量法。出自《千金要方》。
是指以患者本人體表的某些部位折定分寸，
作为量取穴位的長度單位。
穴區神經血管
額神經和枕大神經吻合支，顳淺動、靜脈頂支和枕動、靜脈的吻合網。
適應症
頭痛，眩暈；牙痛，視神經萎縮；嘔吐等。
穴位配伍療法
偏頭痛：1.正營 2.風池 3.頭維 4.外關
眩暈：1.印堂 2.太陽 3.正營 4.風池
目眩，嘔吐：1.正營 2.風池 3.內關 4.印堂
牙關不利，牙痛：1.正營 2.頰車 3.下關 4.合谷