# XH21 Tousanjiao (Head Triangle) – Extra Points: Head

頭三角 · tóu sān jiǎo

Location: Three points, on the forehead at the crossing points of the perpendicular line from the inner canthus, the front hairline, and shangxing (GV23).

Cautions: No specific contraindications.

Canonical page: https://acuiq.com/points/xh21

## Indications

An indication list is a reference index, not a prescription – see the protocols below for sourced treatments.

Calm Mind, Calm Mind, Circulation Blood, Circulation Blood, Insomnia, Headache, Headache

## Most often selected alongside XH21

Sourced protocols in the index pairing each point with this one. Corpus frequency, not a combination to use.

- CV23 (Clean Spring) – 1 protocols
- GB20 (Wind Pool) – 1 protocols
- GV14 (Great Vertebra) – 1 protocols
- GV20 (100 Convergences) – 1 protocols
- LI04 (Junction Valley) – 1 protocols
- LI10 (Arm Three Miles) – 1 protocols
- LI11 (Pond At The Bend) – 1 protocols
- XH01A (Four Spirit Brightness) – 1 protocols

## Protocols using XH21

| Symptoms | Points | Course | Source | Kind | Caveat |
|---|---|---|---|---|---|
| Snoring, Sleep Apnea Obstructive, Sleepiness Daytime | CV23, XH21 | 7 days | doi:10.1177/19336586251366065 | trial | Point selection reported in a published study. |
| Cervical Spondylosis Neck Pain Pain Neck Numbness Upper Limb Vertigo Qi Stagnation And Blood Stasis | LI04, LI10, LI11, GB20, GV14, GV20, XH01A, XH01B, XH01C, XH01D, XH21 | 20 days | Zhang Huiyu, Guo Minfang, Lu Xiaozuo. Pulse changes in patients with cervical spondylosis before and after acupuncture treatment. Journal of Traditional Chinese Medicine 2016; 36(1): 63-70 | text | Point selection recorded in a clinical text or case report. |

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AcuiQ-authored prose (symptom and meridian descriptions, the wiki, the auricular crosswalk) is licensed CC-BY-4.0: https://creativecommons.org/licenses/by/4.0/. The assembled protocol compilation is not: build on it with attribution, but do not redistribute it whole as a dataset – https://acuiq.com/terms. The underlying findings are the cited sources' claims – each entry carries its citation; verify against the source before relying on it. Not medical advice: https://acuiq.com/terms