二白 : Erbai : Two Whites

Location Guides:

Location:

On the flexor aspect of the forearm, 4 cun proximal to Daling P-7, either side of the tendon of flexor carpi radialis.

Needling:

Perpendicular insertion 0.5 - 1 cun or oblique proximal insertion 1 - 1.5 cun

TCM Actions:

Treats prolapse of the rectum and haemorrhoids

TCM Indications:

• Haemorrhoids, prolapse of the rectum, itching of the anus, blood in the stool, tenesmus.

Neuroanatomy:

Superficial Innervation: Lateral and medial cutaneous nerves of the forearm (C5 - C6 and C8 - T1)

Dermatome Segment: C6 (radial) and T1 (ulnar)

Martial Applications & Effects of Injury:

See Montaigue, Dim Mak Locations, Taijiworld.com for explanation of effects.

Major Combinations:

• Chronic haemorrhoids:
    Erbai Ex-UE-2 with Chengshan Bl-57 and Changqiang Du-1
    (Yang Jizhou, 杨继洲, 1601: Zhen Jiu Da Cheng, 針灸大成, Great Compendium of Acupuncture and Moxibustion).
  
  
• Prolapse of the rectum and haemorrhoids:
    Erbai Ex-UE-2 with Baihui Du-20, Zhishi Bl-52 and Changqiang Du-1
    (Yang Jizhou, 杨继洲, 1601: Zhen Jiu Da Cheng, 針灸大成, Great Compendium of Acupuncture and Moxibustion).

Reference Notes:

Basic information on location, needle depth, TCM actions, indications and combinations is taken from Deadman et al (2001): A Manual of Acupuncture with additional anatomical information researched by reference to Gray's Anatomy (38th Ed., 1995) unless otherwise referenced. Images were found on acupunctureschoolonline.com and can be traced back to Claudia Focks (2008) Atlas of Acupuncture originally. I cannot claim any credit or rights over them. Other sources should be quoted in the text.

For some of the more unusual terms I have created a glossary here