Points Database

: Laogong : Palace of Toil

Pc-8 : Hand Jueyin Pericardium 8

Alternative Name(s): Guicu
Translation: Ghost Cave

Classifications:
Ying-Spring and Fire point

Sun Si-miao Ghost point (3rd trinity)
Exit point to Guanchong SJ-1
Horary point of the Pericardium channel

Location:
Between the second and third metacarpal bones, proximal to the metacarpo-phalangeal joint, in a depression at the radial side of the third metacarpal bone.

Needling:
Perpendicular insertion 0.5 cun

TCM Actions:
Clears heat from the pericardium and revives consciousness
Clears heat from the heart and calms the spirit
Harmonises the stomach and clears heat from the middle jiao
Clears the nutritive level and cools blood

TCM Indications:
  • Fever, coma, loss of consciousness, febrile disease accompanied by sweating which continues for days, windstroke, hypertension.
  • Epilepsy, mania-depression, fright, sadness, propensity to anger, apprehension, restless zang disorder, ceaseless laughter.
  • Heart pain, pain of the chest and lateral costal region, cough.
  • Erosion of the mouth and tongue in children, mouth ulcers, foul breath, difficult ingestion, vomiting, hypogastric (ji ju) masses.
  • Vomiting blood, ceaseless nosebleed, blood in the stool, haemorrhoids, dark urine, jaundice, yellow eyes, throat pain.
  • Tremor of the hand, eczema and tinea of the hand, scaling of the skin of the hand, heat in the palm of the hand, sweating of the palms, hand painful obstruction.

    Neuroanatomy:
    Superficial Innervation: Median nerve branches to fingers from C6 - C8 and ulnar nerve (communicating to median branch) from C8 - T1
    Dermatome Segment: C7

    Notes:
    Important point in qigong where qi is projected from the hands.

    Ling Shu Ch. 6 suggests piercing the Ying points (and Shu points according to Unschuld, 2016, but not according to Wu & Wu, 201) of the Yin channels if a disease is in the Yin of the Yin realm (e.g. the Zang organs) suggesting this point (and Daling Pc-7) in diseases of the Heart. The Heart had no channel in Ling Shu, if disease had reached that far death was considered immanent.

    Ling Shu Ch. 9, On Ends and Beginnings, advises that in the case of Heat associated with receding Yin Qi the Yang conduit should be pierced once and the Yin conduits twice. Based on other recommendation to use the He-Sea of the Yang conduits (Ch. 19) and the Yuan-Source with the Ying-Spring points (Chs. 6, 19 and 24) to clear Heat from the Zangfu, that would suggest this point, Daling Pc-7 and Tianjing SJ-10 as a protocol to clear Heat in the Pericardium/San Jiao. Next it advises that in Cold associated with receding Yang Qi the Yang should be pierced twice and the Yin once but no such obvious protocol is evident for this situation.

    Ling Shu Ch. 19, on the Four Seasonal Qi, advises opening the Jing-Well and Ying-Spring openings in winter, piercing deeply and retaining the needle for a while.

    Ling Shu Ch. 44, On the Qi Moving in Accordance with the Norms, indicates that the Ying-Spring points should be pierced in spring or when the disease is associated with a change in complexion. The seasonal aspect should not be interpreted literally as it describes the colours as "controlled by spring". It also describes the morning, afternoon, evening and night cycle of the day to be like the four seasons of the year with morning corresponding to spring. Only five channels are discussed so this point must have served the for the Heart too.

    Ghost Points:
    The third trinity of Ghost Points, consisting of this point, Chengjiang Ren-24 and Jiache St-6, is mainly concerned with extreme isolation as the body attempts to deprive itself of any stimulation in order move into a state of suicidal ideation. It generally refers to institutionalised situations, including catatonic states. In a modern clinical setting this trinity is probably better represented by depression with social isolation, loss of appetite or interest in stimulation, tension in the jaw and extreme rumination.

    Guicu, Ghost Cave, refers to a level of isolation when the person covers themselves or wants to sit alone in the dark. Their inability to absorb results in vomiting bile, diarrhoea with undigested food and malabsorption. They will probably need to be fed through a drip. They may have a jaundiced hue, alternate between hot and cold and experience episodes of extreme fear.

    This point is generally bled (Yuen, 2005, 3 Spirits & 7 Souls).

    Medieval phlebotomy point (Hans von Gersdorff, 1517: Feldtbüch der Wundartzney, www.nlm.nih.gov)

    In ayurvedic medicine:
    Talahridya marma point
    Size: 1/2 angula (cun)
    Structure: Muscular
    Effect of Injury: Early death (sadhyapranahar marma)
    (Harish Johari, 1996, Ayurvedic Massage, Sanatan Society; Anupama Bhattacharya, Marma Shastra)

    Lad and Durve (2008) in Marma Points of Ayurveda call this point Tala Hrida and associate it with Prana Vayu, Vyana Vayu, Udana Vayu, Sadhaka Pitta and Avalambaka Kapha.

    They give the following functions:
    - Balances heart and mind
    - Harmonises emotions and relieves stress
    - Regulates functions of the lungs and diaphragm
    - Benefits the hand

    In Tibetan medicine:
    Bleeding point (AMNH, Tibetan Medical Paintings)

    In Thai massage:
    Acupressure point indicated for neck pain/injury/arthritis, motion sickness, nausea and vomiting (Salguero & Roylance, 2011, Encyclopedia of Thai Massage)



    Reference Notes: (click to display)