Acupuncture Points Notebook

Location Guides:

: Dachangshu : Large Intestine Shu

Bl-25 : Foot Taiyang Bladder 25

Back-Shu point of the large intestine

1.5 cun lateral to the lower border of the spinous process of the fourth lumbar vertebra (L4).

Perpendicular insertion 1 - 1.5 cun

TCM Actions:
Regulates the intestines
Transforms stagnation and alleviates pain
Strengthens the lumbar region and legs

TCM Indications:
  • Borborygmus, cold or damp (dong) diarrhoea, undigested food in the stool, dysenteric disorder, blood in the stool, internal abscess, difficulty urination and defecation, constipation, prolapse of the rectum.
  • Distension and pain of the abdomen, hypogastric pain, distension and fullness of the hypogastrium, twisting pain of the lower abdomen, cutting pain of the umbilical region, inability to eat and drink, remains thin despite much eating.
  • Lumbar pain, stiffness and rigidity of the lumbar spine, pain and painful obstruction of the lower limbs, atrophy disorder, dysmenorrhoea.

    Superficial Innervation: Dorsal rami of S1 - S3
    Dermatome Segment: S3
    Deeper Structures: Dorsal rami of L4

    As the back-shu of the Large Intestine this is an important point for disorders of defecation when combined with other points for correcting the underlying issues.


    In Mayan medicine:
    Used to treat manu jana or "the sounding of indigestion" by pinching between the fingers or piercing (Garcia, Sierra, Balam, 1999: Wind in the Blood)


    In Tibetan medicine:
    Moxa point (AMNH, Tibetan Medical Paintings).


    In Thai massage:
    Acupressure point along the Itha (left) and Pingala (right) sen lines running from the navel Shenque Ren-8 to the knee and up the back to the neck and head.
    Indicated for back, hip and sacroiliac joint pain/injury/arthritis, menstruation difficulties, PMS and reproductive system ailments.
    (Salguero & Roylance, 2011, Encyclopedia of Thai Massage)

    Reference Notes: (click to display)