Pericardium Meridian
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PC-7
Earth-Tu
Stream-Shu Point
Yuan-Source Point
Sun Si Miao Ghost Point
Safety Warnings
- Dangerous point - requires extra caution
- Deep needling contraindicated - shallow insertion only
Needle Depth
0.3–0.5 cun
Needle Angle
90° (Perpendicular)
Body Area
Wrist
Location
In the depression in the middle of the transverse crease of the wrist, between the tendons of palmaris longus and flexor carpi radialis muscle.
Main Actions
- Calms the Mind
- Clears Heat
- Harmonizes the Stomach
Indications
Commentary
Daling P-7 is mostly used to calm the Mind, so that it treats symptoms like insomnia, manic behavior, palpitations, agitation, mental restlessness, sadness and fright.
This is a very similar function as its neighboring point of Shenmen HE-7. According to some books, P-7 is more useful in women, while HE-7 is better for men. Daling P-7 is also said to be more effective to treat the emotional problems caused by breaking up of relationships.
Daling P-7 is able to clear Heat and Toxic Heat as well, especially in the case of the Heart Fire blazing. The typical symptoms are febrile disease, red eyes, thirst, eczema of hands, carbuncles or furuncles. The Fire in Heart is also responsible for mental issues such as anxiety or manic behavior.
Finally, it can harmonize the Stomach and Intestines. Thus it treats typical symptoms such as epigastric pain or vomiting.
Classical Sources
Ling Shu (Spiritual Pivot): First recorded in the Ben Shu chapter as the Shu-Stream and Yuan-Source point of the Hand Jueyin Pericardium channel.
Zhen Jiu Jia Yi Jing (A-B Classic of Acupuncture): Also written as "Tailing" (太陵). Listed as an important point for treating Heart disorders and calming the spirit.
Zhen Jiu Da Cheng (Great Compendium of Acupuncture): "Treats febrile disease without sweating, heat in palm, elbow and arm contracture pain, axillary swelling, incessant laughter, vexation, Heart suspended as if hungry, Heart pain with palm heat, alternating sadness and crying with fright and fear, red and yellow eyes, bloody urine, uncontrollable vomiting, manic speech without joy, throat obstruction, dry mouth, fever with headache, shortness of breath, chest and rib pain, scabies and skin lesions."
Qian Jin Yao Fang (Thousand Gold Prescriptions): Listed by Sun Simiao as the 4th Ghost Point (Gui Xin/鬼心 - Ghost Heart) for treating mental disorders and spiritual possession.
How to Locate
First identify the wrist joint space and locate Daling P-7 in the middle between the two tendons, which is easier to palpate when the fingertips are pressed together. If only one tendon is visible, it will be the tendon of the flexor carpi radialis muscle, which goes to the index finger. P-7 is on its ulnar side.
Caution
The median nerve lies directly beneath this point. Needling commonly produces a significant electric sensation radiating toward the fingertips. Once elicited, further manipulation is inappropriate and may damage the nerve. Use gentle technique and avoid deep or aggressive needling. This point can be quite sensitive; patient should be informed of the expected electric sensation beforehand.
Needle Angle
90° (Perpendicular)
Depth Category
Shallow
Standard Depth
0.3–0.5 cun
Needling Directions
Vertically 0.3–0.5 cun or 0.5–1 cun obliquely in a lateral direction along the tunnel. Caution: The median nerve is located directly under this point, thus needling can cause a significant electric sensation. In this case, no further needle manipulation to avoid possible injury.
Expected Deqi Sensation
Local distention and soreness at the wrist. A characteristic numb or electric sensation extending toward the fingertips is common due to proximity to the median nerve. Once this electrical sensation is elicited, further needle manipulation should be avoided to prevent nerve damage.
Moxibustion
Recommended
Duration: 5–10 minutes
Cupping
Contraindicated
Bloodletting
Recommended
Gua Sha
Contraindicated
Five Element & Transporting Classification
Five Phase
Earth-Tu
Transporting Type
Stream-Shu Point
Mother-Child Role
Child (Reducing)
Special Point Classifications
Yuan-Source Point
Sun Si Miao Ghost Point
Related Resources
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