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There are cases where individuals suddenly develop a *ju* (a type of deep-seated, hard swelling) between the limbs or on the head and face. The top of the lesion is black, the skin is purple, and the pain is extreme. This is the toxicity of a Yang syndrome. If treated improperly, it can also be fatal. The toxicity of a Yang syndrome has a very rapid onset; if dispersing-toxicity herbs are not used urgently, it may lead to severe buboes (lymphadenitis), spreading uncontrollably, transforming minor toxicity into major toxicity. However, *ju* and *yong* (a type of superficial, soft swelling) are indeed different: *yong* ulcerates internally, while *ju* swells externally. Ulceration internally is harder to treat than external swelling, which is easier to resolve through internal medication. Although the toxicity of both *yong* and *ju* emanates from the interior to the exterior, none cannot be cured through internal treatment; however, *ju* diseases are particularly suitable for internal therapy. The prescription used is Xiao Ju San (Disperse Ju Powder):
Sheng Di Huang (Rehmanniae Radix Preparata, 3 qian) Lian Qiao (Forsythiae Fructum, 3 qian) Ren Dong Teng (Lonicerae Japonicae Caulis, 1 liang) Bai Zhi (Angelicae Dahuricae Radix, 3 qian) Xia Ku Cao (Prunellae Spica, 1 liang) Di Yu (Sanguisorbae Radix, 3 qian)
Tian Hua Fen (Trichosanthis Radix, 3 qian) Sheng Gan Cao (Glycyrrhizae Radix et Rhizoma, 2 qian) Dang Gui (Angelicae Sinensis Radix, 1 liang) Decoct in water and take orally. Two doses will cause resolution if un-ulcerated; four doses will ensure complete recovery if ulcerated.
This is a universal formula for treating malignant *ju*. For anyone developing a *ju*, administering this formula yields miraculous effects. Because nourishing blood and dispersing toxicity promotes blood circulation, making it difficult for toxicity to remain; cooling the blood and clearing fire lowers blood temperature, making it easy for fire to dissipate. Since *ju* mostly belongs to Yang syndromes, treatment is invariably appropriate.

Some individuals develop *ding* chancres (hard boils), experiencing sudden, excruciating pain. This is also Yang toxicity, but it is most difficult to identify at its initial stage. A common folk method involves having the patient chew raw soybeans; if they cannot taste the pungent/spicy flavor, it indicates a *ding* chancre, a reliable diagnostic sign. The head of such a chancre must present as a yellow blister, sometimes showing a purplish-black color in the center. One must examine closely within the blister, where there will inevitably be a red-white line extending outwards from the blister. Generally, if the *ding* appears on the foot, the red line travels from the foot towards the umbilicus; if on the hand, the red line travels from the hand towards the heart; if on the lips or face, the red line travels from the lips/face towards the throat. Upon seeing such a thread-like red line, prick the end of the red line with a needle to drain toxic blood, thereby preventing the toxicity from attacking the heart. If a white thread-like line appears, pricking is unnecessary. The treatment principle focuses primarily on detoxification and purging fire. People warn against using official pharmaceutical preparations, which is ignorant advice; how can toxicity be removed without medicine? The prescription used is Ba Ding San (Extract Ding Powder):
Zi Hua Di Ding (Violae Herba, 1 liang) Gan Ju Hua (Chrysanthemi Flos, 1 liang) Decoct in water and take orally. After one dose, the red line disappears; after two doses, the *ding* chancre dissipates; after three doses, complete recovery occurs. Why bother with the superfluous act of lancing the chancre head externally? If it has already ulcerated, use this same formula, but add Dang Gui (Angelicae Sinensis Radix) in a dosage of 2 liang. Four doses are not required; once the toxicity is exhausted, flesh will regenerate naturally.