Bladder meridian
BL-67 (Zhìyīn, 至阴) — Reaching Yin
- Meridian
- Bladder (BL)
- Anatomical view
- lateral
- Point classification
- Jing-well and Metal point of the Bladder channel.
- Depth reference
- 0.1-0.2 cun shallow perpendicular insertion or controlled prick
- Moxibustion
- For breech presentation, use only within obstetric care after training; benefit is possible, but adverse-event evidence remains limited
- Reference aliases
- BL67; Zhiyin; 至阴; Reaching Yin
Anatomical location
On the outer side of the little toe, 0.1 finger-cun behind the lateral corner of the toenail.
Traditional actions
Traditionally clears the head and eyes and is used as a Jing-well point; obstetric moxibustion is a separate practice from needling.
Recorded indications
Primary: Reference uses include headache, eye pain, nasal blockage, and little-toe pain; breech presentation belongs specifically to supervised BL-67 moxibustion evidence.
Secondary: Secondary uses include urinary difficulty, retained placenta patterns, and little-toe pain.
How to read this reference
AcuAtlas separates anatomical location, traditional classification, recorded actions, indications, insertion-depth references, and moxibustion notes because these fields answer different study questions. The location statement is the orientation anchor. The classification and actions describe traditional reference categories, while indications summarize how checked educational sources associate the point with established teaching material. They are not a recommendation to select or stimulate the point.
Depth and moxibustion entries are reproduced as bounded reference notes rather than procedural instructions. Individual anatomy, technique, angle, clinical setting, and local professional standards can change what is appropriate. Review the cited documents and supervised training material before using any technical field. The normalized map coordinate is included only to place the point on the matching AcuAtlas body plate; it is not a substitute for palpation or anatomical assessment.
Sources
References displayed on this page were recorded with the point dataset.
- WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008) BL67, p. 133
- Acupuncture.com Point Locator - Urinary Bladder 67 English name, classification, indications, functions, superficial needling and breech moxa statement
- TARA Acupuncture Knowledge Base BL 67: special-point role, indications, method, moxibustion, innervation and vasculature
- WHO Guidelines on Basic Training and Safety in Acupuncture Section II, 2.1, pregnancy
- The Safety of Obstetric Acupuncture: Forbidden Points Revisited Needling safety review; BL67 discussed among traditionally avoided points; moxa-only studies excluded
- Cochrane Evidence - Moxibustion for turning a baby in breech position BL67 moxibustion review; possible benefit and limited adverse-event certainty
Frequently asked questions
Where is BL-67 located?
On the outer side of the little toe, 0.1 finger-cun behind the lateral corner of the toenail.
What reference actions and indications are recorded for BL-67?
Traditionally clears the head and eyes and is used as a Jing-well point; obstetric moxibustion is a separate practice from needling. The dataset lists these primary indications: Reference uses include headache, eye pain, nasal blockage, and little-toe pain; breech presentation belongs specifically to supervised BL-67 moxibustion evidence. Secondary indications are recorded as: Secondary uses include urinary difficulty, retained placenta patterns, and little-toe pain.
Is BL-67 safe during pregnancy?
Needling and moxibustion require separate cautions. BL-67 needling is traditionally avoided in pregnancy; reviewed needling studies found no objective obstetric harm. BL-67 moxibustion for breech may improve cephalic presentation, but adverse events were poorly reported and included contractions and burns, so it requires obstetric oversight.