LI02 Erjian (Second Space)

Location

In the depression of the radial side of the index finger distal to the 2nd metacarpophalangeal joint; point located with finger slightly flexed.

Indications

Conditions for which LI02 is listed as indicated. An indication list is a reference index, not a prescription – see the protocols below for sourced treatments.

Protocols using LI02

• Xerostomia, Dry Mouth Radiation-induced – LI02 (doi:10.1186/1472-6882-8-37 ↗)
• Fatigue, Anxiety, Vomiting, Pain, Nausea, Dysphagia, Xerostomia – LI02, LI11, ST05, ST06, ST07, ST36, SP06, GB20, CV23, GV20 (doi:10.1177/1534735410378856 ↗)
• Taste Loss, Dysphagia, Xerostomia, Appetite Decreased – LI02, LI04, ST05, ST06, ST07, ST36, SP06, SP09, CV23, GV20, GV24 (doi:10.1177/1534735410378856 ↗)
• Fatigue, Dizziness, Tinnitus, Headache, Constipation, Depression, Insomnia, Itchiness, Edema, Palpitation, Knee Pain, Back Pain, Vision Blurred, Cervical Pain, Stiffness Shoulder, Cramp Leg, Lower-limb Pain, Upper-limb Numbness, Lower-limb Numbness, Hemodialysis Complication – LU05, LU09, LI02, LI11, ST41, ST45, SP02, SP05, HT07, HT09, SI03, SI08, BL65, BL67, KD01, KD07, PC07, PC09, TB03, TB10, GB38, GB43, LV02, LV08 (doi:10.1155/2015/802846 ↗)
• Pruritus, Dermatitis Atopic, Sleep Disturbance, Skin Eczema – LI02, LI11, ST36, ST43, SP03, SI02, SI03, BL66, PC06, TB03, TB06, GB41, LV03 (doi:10.1155/2017/1926806 ↗)
• Dyspepsia, Pruritus, Dermatitis Atopic, Skin Dryness, Skin Erythema – LI02, LI11, ST36, ST43, SP03, SI02, SI03, BL66, PC06, TB03, TB06, GB41, LV03 (doi:10.1155/2019/1907578 ↗)
• Insomnia, Eczema, Dyspepsia, Pruritus, Dermatitis Atopic – LI02, LI11, ST36, ST43, SP03, SI02, SI03, BL66, PC06, TB03, TB06, GB41, LV03 (doi:10.1186/s12906-021-03306-1 ↗)
• Constipation, Diarrhea, Pruritus, Atopic Dermatitis, Eczema Skin – LI02, LI11, ST36, PC06, GB31 (doi:10.1155/2021/5584247 ↗)
• Dysphagia, Dysphagia Neurogenic, Consciousness Disorder, Dysphagia Severe, Brain Injury Acquired, Aspiration Silent, Brain Injury – LI02, ST36, ST44, SI03, TB17, CV23 (doi:10.3389/fneur.2026.1724043 ↗)
• Dysgeusia, Taste Altered, Fatigue Cancer Related – LI02, LI04, XH12, XH13 (doi:10.1007/s00520-026-10756-1 ↗)
• Hyperpigmentation Facial, Melasma Malar – LI02, ST44, SI02 (doi:10.13703/j.0255-2930.20250217-k0003 ↗)
• Dry Mouth, Hyposalivation, Sjogren's Syndrome, Reduced Saliva, Sjögren's Syndrome – LI02, ST05, ST06, ST07, SI19, BL13 (doi:10.1007/s10103-014-1590-8 ↗)
• Dysgeusia, Fatigue Cancer-related – LI02, LI04, SP06, LV03, XH03, XH12, XH13, XH16 (doi:10.1007/s00520-026-10756-1 ↗)
• Keratoconjunctivitis Sicca, Xeropthalmia – LI01, LI02 (Acupuncture Treatment of Dry Eye. ClinicalTrials.gov NCT00554879)
• Paralysis Facial – LI02, LI04, LI06, ST04, ST06, ST07, ST44, TB17, GB02, GB03, LV02, CV24, GV26 (马天一谢煜谭丽刘纯燕徐振华. 基于数据挖掘分析古籍针灸治疗面瘫的腧穴应用规律. 针灸临床杂志 ., 2019 [CNKI])
• Toothache, Toothache, Dental Pain – LI02, LI04, ST06, ST07, ST44 (Tang Hua-Sheng et al.. [Controlled observation on combination of Shu-stream and Ying-spring acupoints for toothache].. Zhongguo zhen jiu = Chinese acupuncture & moxibustion, 2013)
• Toothache, Toothache, Wind Heat – LI02, LI04, ST06, ST07, ST44, TB17, GB20 (Tang Hua-Sheng et al.. [Controlled observation on combination of Shu-stream and Ying-spring acupoints for toothache].. Zhongguo zhen jiu = Chinese acupuncture & moxibustion, 2013)
• Toothache, Fire Stomach, Toothache – LI02, LI04, LI11, ST06, ST07, ST44, ST45 (Tang Hua-Sheng et al.. [Controlled observation on combination of Shu-stream and Ying-spring acupoints for toothache].. Zhongguo zhen jiu = Chinese acupuncture & moxibustion, 2013)
• Toothache, Toothache, Fire Deficiency – LI02, LI04, ST06, ST07, ST44, KD03, KD06 (Tang Hua-Sheng et al.. [Controlled observation on combination of Shu-stream and Ying-spring acupoints for toothache].. Zhongguo zhen jiu = Chinese acupuncture & moxibustion, 2013)
• Arthralgia Heat Bi Joint Swelling Fever – LI02, LI04, LI11, LI15, ST35, BL60, TB04, TB05, GB30, GB31, GB34, GB39, GV14 (ZHANG En-qin. Bi Syndrome (Arthralgia Syndrome). Journal of Traditional Chinese Medicine, 2010, 30(2): 145-152.)

Most often selected alongside LI02

How many sourced protocols in the index pair each point with LI02. Corpus frequency, not a combination to use.

• LI04Junction Valley9 protocols
• LI11Pond At The Bend8 protocols
• ST06Jaw Bone8 protocols
• ST07Below The Arch8 protocols
• ST36Leg Three Miles7 protocols
• ST44Inner Court7 protocols
• SI03Back Stream5 protocols
• LV03Great Surge4 protocols
• PC06Inner Gate4 protocols
• SI02Front Valley4 protocols
• TB03Central Islet4 protocols
• BL66Foot Valley Passage3 protocols

Other points on the Large Intestine Meridian