GV20

Baihui

Star

百會 (Bǎihuì) — Hundred Convergences

Du (Governing) channel · point 20

Not yet clinically reviewed

Meeting point of the Du Mai with all six yang channelsSea of Marrow point

Traditionally used for

Headaches
Dizziness
Ears & hearing
Nose & throat
Bowel health
Urinary & fluids
Sleep
Mood & calm
Nerves & recovery
Blood pressure

Location

On the head, on the anterior midline, 5 cun within the anterior hairline — 1 cun anterior to the midpoint between the anterior and posterior hairlines; with the ears folded, at the midpoint of the line connecting their apices.

How to locate: Fold the ears forward, rest the little fingers on the ear apices and bring the thumbs together over the vertex; the point is where they meet on the midline, usually in a slight depression, 1 cun anterior to the midpoint between the anterior and posterior hairlines.

Distances are in cun, a proportional unit — how to measure.

Body map, back: GV20 · Nape of neck — Fig. — GV20 · Nape of neck After Albinus, 1747

The vertebral column — Gray's Anatomy plate — The vertebral column Gray's Anatomy, 1918 Marker hidden while its position on this plate is re-checked.

3D view

3D view not available for this point: its position can't be carried onto the 3D model reliably (it failed a placement check). The 2D maps above show it.

Needling

Cited needling

Transverse insertion

Depth 0.5–1 cun

skindeeper

Depths describe average adult habitus in the cited population, never a single safe number for the patient in front of you. Palpate and adjust.

Sources (1)

Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Hove: Journal of Chinese Medicine Publications; 1998 — p. 552 Supports: techniques (names this point)

Site notes · not cited

Depth: 0.3–0.8 cun

Angle: Transverse, directed posteriorly to raise yang, or anteriorly to subdue it

Moxibustion: Moxibustion at GV20 is the classical method for raising sunken qi in prolapse.

Functions

Raises yang and lifts prolapse
Calms the spirit and clears the mind
Subdues Liver yang and extinguishes wind
Benefits the brain and the sense organs and nourishes the sea of marrow

Indications

Prolapse of the rectum, uterus or bladderdizziness and vertigoheadache, especially at the vertexinsomnia, anxiety and poor memorydepression and low moodstroke and hemiplegiahypertensionepilepsy and maniatinnitus and nasal congestionhaemorrhoids

Clinical Notes

Where a hundred channels converge. It both raises and subdues depending on technique — moxa or posterior threading raises yang in prolapse and depression, while anterior threading with reducing method subdues rising yang in hypertension and vertigo.

Combinations Using This Point

Calming the Spirit — HT7, PC6, Yintang and GV20

The four points most reached for in anxiety and insomnia — two distal, two on the midline of the head.

Sources

World Health Organization. WHO Standard Acupuncture Point Locations in the Western Pacific Region. Manila: WHO Regional Office for the Western Pacific, 2008. (Location.)
Focks C, ed. Atlas of Acupuncture. Edinburgh: Churchill Livingstone Elsevier, 2008. (Locating method and actions.)

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