jing-well (wood) point.

bubble_chart Etymology

"Yin" (隱) means hiding; "Bai" (白) refers to white flesh. It metaphorically describes the acupoint hidden at the junction of the red and white flesh.

bubble_chart Location

Yinbai (SP1) acupoint
(adapted from "Meridians and Acupoints")

• Lingshu-Benshu: "On the medial side of the tip of big toe";
• Lingshu-Rebing: "A distance from the toenail like a leaf of garlic"; specifically, it is located in the depression 1 fen behind the inner corner of the toenail of big toe.

bubble_chart Anatomy

• Nerve: superficial peroneal nerve, dorsal digital nerve, deep part is medial plantar nerve of tibial nerve.
• Vessel: dorsal digital artery.

bubble_chart Manipulation

Shallow puncture 0.2 to 0.3 cun, or prick to bleed.

bubble_chart Efficacy

Regulate blood and control blood circulation, invigorate spleen and warm spleen, clear heart and calm mind, warm yang and revive cold limbs.

• Classical: abdominal distension, adverse breath, cold qi in abdomen, panting, intestinal heat with sudden diarrhea, diaphragm stuffiness, vomiting with no appetite, fluid retention, febrile disease with persistent epistaxis, vexation and frequent sadness, cold shins, unable to lie down, full of qi and heat in chest, nightmares and restlessness, prolonged menstruation, menorrhagia and metrostaxis, hematemesis, blood in both urine and feces, corpse-like syncope with no consciousness but pulse still active, men with hidden swollen testicles, infantile fright, chronic infantile convulsion, manic and depressive psychosis.
• Modern: hypermenorrhea, uterine spasm.

bubble_chart Combinations

• Corpse-like syncope, unconsciousness with pulse still active: Yinbai (SP1), Dadun (LR1).
• Severe persistent epistaxis: Yinbai (SP1), Weizhong (BL40).
• Inability to lie down: Yinbai (SP1), Tianfu (LU3), Yinlingquan (SP9).
• Vomiting blood and epistaxis: Yinbai (SP1), Pishu (BL20), Shangwan (CV13), Ganshu (BL18) .
• Hematochezia: Yinbai (SP1), Zusanli (ST36).
• Hypermenorrhea: Yinbai (SP1), Qihai (CV6), Xuehai (SP10), Sanyinjiao (SP6).