Skin-subcutaneous tissue-palmar aponeurosis-between tendons of superficial and deep flexor muscle of the 4th and 5th fingers -4th lumbrical-4th dorsal interosseous muscle.
In the superficial layer, there are the palmar branches of the ulnar nerve. In the deep layer, there are the common palmar digital artery and vein and the proper palmer digital nerve from the ulnar nerve.
Supinate palm, flex fingers towards the transverse stria of the centre of the palm; in the depression of the palm between tips of the ring and the little finger.
Clearing away the heart-fire, regulating the flow of qi, and activating the collaterals.
Palpitation, pain in the chest, spasmodic pain of the little finger, feverish sensation in the palm, enuresis, dysuria, and pruritus of the external genitalia.
Combined use with ZusanliST36(Zusanli (ST36) He-Sea Point) for treatment of enuresis; with GuanyuanCV4 (Guanyuan (CV4) Front-Mu Point of the SmallIntestine) for treatment of pudendal itch; with DazhuiGV14 (Dazhui (GV14)) for treatment of intermittent fever.
Insert the needle perpendicularly 0.3-0.5 cun deep; needling response: a sensation of distension and soreness which may radiate to the hand; moxibustion: using 3-5 moxa-cones, or mild moxibustion for 10 min.