The Yang pivot of the back — Yanggang (BL-48) is the outer back-shu companion to the Gallbladder, clearing Heat and Dampness from the middle Jiao, easing the sides, and restoring the smooth flow that the Liver and Gallbladder depend on.
Name & story
The name 阳纲 Yanggang carries a quiet authority: Yang (阳) is brightness, warmth, activity — the Yang aspect of the body; Gang (纲) means a cardinal thread, a guiding principle, the main cord from which everything else hangs. Together, the name suggests something like "the governing thread of Yang" — a point that keeps the Yang Qi of the Gallbladder orderly and directed. It sits on the outer Bladder line, level with the Gallbladder's back-shu point, and its name quietly tells us its role: to keep that Yang from running hot or wild, and to restore it to its proper course.
Point family & character
Yanggang (BL-48) belongs to the Bladder Meridian (BL), on the outer, lateral line of the back. It sits at the level of Danshu BL-19, the back-shu point of the Gallbladder, and shares its sphere of influence. As Deadman notes, points on this outer Bladder line have similar indications to the corresponding inner-line points, though generally with a somewhat less extensive range of action.
Five-element dynamics
The Gallbladder is the Yang organ of the Wood element — the partner of the Liver, responsible for storing and excreting bile, for decisive action, and for the smooth distribution of Qi through the sides of the body. When Wood loses its harmony — through Heat, Dampness or stagnation — the Gallbladder channel rebels: there is bitterness in the mouth, jaundice, pain in the flanks, and digestion suffers. Yanggang (BL-48), sitting directly beside the Gallbladder's back-shu point, brings order back to this Yang Wood dynamic — clearing Heat, resolving Dampness, and restoring the free flow the Wood element needs.
Location
Yanggang (BL-48) is found 3 Cun lateral to the midline of the back, at the level of the lower edge of the spinous process of the 10th thoracic vertebra (T10) — directly beside Danshu BL-19, the Gallbladder back-shu point, on the outer Bladder line.
Anatomy & fascia
The point lies in the back musculature lateral to the spine, on the outer Bladder line.
Needling
The needle is inserted obliquely, angled slightly toward the spine. As with all points on the back near the chest cavity, care is taken not to needle too deeply.
Safe depth
0.5–0.8 Cun obliquely.
Moxa, cupping & Tui Na
Gentle Moxa may be applied to warm the point and support the middle Jiao when Cold and Dampness predominate. Cupping is sometimes used in the area of the outer Bladder line to move Qi and Blood Stasis in the back.
Functions
Clears Heat and Dampness from the Liver and Gallbladder; Regulates Qi in the middle Jiao; Harmonises the Gallbladder; Relieves jaundice; Eases flank and costal pain; Supports digestion when Liver and Gallbladder disharmony disrupts the Stomach and Spleen.
Indications
Jaundice — especially the damp-heat type, with yellowing of the skin and eyes. Bitter taste in the mouth, a classic sign of Gallbladder Heat. Pain and distension in the flanks and hypochondrium. Digestive disturbance stemming from Liver or Gallbladder disharmony: epigastric pain, bloating, rumbling intestines, diarrhoea. Fever, thirst. Back pain at the thoracic level.
Mind & spirit (Shen)
The Gallbladder in Chinese medicine is linked to courage, decisiveness and the capacity to act. When Gallbladder Qi is disrupted — hot, stagnant or weak — a person may feel timid, hesitant, or caught in indecision, sometimes waking in fright. By clearing the Heat and restoring harmony to the Gallbladder's Yang Qi, Yanggang (BL-48) quietly supports the ability to move forward with clarity and resolve.
Point combinations
With Danshu BL-19 — its inner-line companion — to more powerfully treat Gallbladder disorders, jaundice and costal pain. With Ganshu BL-18 and Yanglingquan GB-34 to clear Liver and Gallbladder Heat and ease flank pain. With Weishu BL-21 when Gallbladder disharmony is disturbing the Stomach.
Clinical spotlight
Yanggang (BL-48) is one of the less frequently discussed outer-line Bladder points, yet its position directly beside the Gallbladder's back-shu gives it a clear and specific role: disorders of damp-heat in the Liver and Gallbladder, particularly jaundice, bitter taste and flank pain. It is a useful point when the practitioner wants to influence the Gallbladder's back-shu zone with a slightly different emphasis than BL-19 alone — or when combining inner and outer line points for a fuller effect on the middle Jiao.
The golden tip
This point on the mid-back is difficult to self-treat with acupressure, but gentle warmth applied to the area — a warm pack placed across the mid-thoracic back — can help ease tightness and support the middle Jiao when digestion is sluggish from stress or overindulgence. Avoiding greasy, fried and overly rich foods reduces the Dampness and Heat that burden the Gallbladder this point works to clear.
For education only — not medical advice. Consult a qualified practitioner.