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A question was asked: What is the condition like when a carbuncle (ju, 疽) occurs at the Baihui acupoint? The answer is: This is named Yuding Fa (Jade Top Eruption). Initially, it resembles a wheat grain, suddenly increasing in pain and distress, with severe chills and high fever occurring simultaneously. This is caused by floating and overflowing deficient Yang. It is appropriate to administer Bawei Wan (Eight-Ingredient Pill) with salt water to guide the fire back to its source; for severe cases, Heixi Dan (Black Tin Pill) may be used. If the person's primordial Qi is originally robust, and the Six Yang meridians are invaded by wind pathogen, with wind and fire fanning each other, causing heat toxin from the Zang-Fu organs to attack upwards, it is appropriate to take Huanglian Xiaodu Yin (Coptis Decoction for Eliminating Toxins), combined with Yushu Dan (Jade Pivot Pill) and Shengjin Dan (Winning Gold Pill). Additionally, slices of Fuzi (Prepared Aconite Root) should be placed on the Yongquan acupoint and moxa-needled five times (five moxa cones) to drain the toxin. If there is no suppuration after seven days, death ensues.

Another question was asked: What is the condition like when a carbuncle (yi, 痈) occurs at the top of the head? The answer is: This belongs to wind-heat affecting the Taiyang Meridian, also known as Foding Ju (Buddha's Head Carbuncle), located at the Shangxing acupoint. It arises from disharmony of Yin and Yang in the Zang-Fu organs, leading to heat toxin congesting upwards. It is appropriate to take Mianing Yin (Life-Saving Decoction) added with Huangqin (Scutellaria Root), Lian (Coptis Rhizome), Zhizi (Gardenia Fruit), and Ben Cao (Ligusticum Wallichii Rhizome) as heat-clearing agents, along with Zijin Dan (Purple Gold Pill), Wujin San (Black Gold Powder), and Duoming Dan (Life-Taking Pill) to induce sweating. For those with deficiency, Shiquan Dabu Tang (Decoction for Perfect Great Tonification) added with Qianghuo (Notopterygium Rhizome) is suitable. If treatment is slightly delayed, resulting in ulceration with black depression, many ominous signs, a surging pulse, coma, and constipation of both bowels and bladder, it is incurable.

The Gui Yi Fang states: Red carbuncles (chi ju, 赤疽) occur at the left or right frontal eminence. Regardless of size, they resemble peaches or plums. Medicinal patches should be applied urgently to rupture them; seeing pus discharge is harmless. If a toxic carbuncle or malignant boil occurs at one spot on the right frontal angle, because it is near the Taiyang acupoint, if swelling fills the Taiyang area, it leads to deficiency and damage. Because it is near the acupoint, it is difficult to resolve and should not be ruptured. If ruptured, injury to external wind-water pathogens can harm the patient. It is also appropriate to use medication to suppurate, then quickly close the wound after pus drainage. If this persists through winter months, it becomes a cold sore. Since this area is near the Taiyang acupoint and extends up to the frontal angle, it is considered a dangerous location. A question was asked: What is the condition like when a carbuncle occurs on the forehead? The answer is: This belongs to accumulated heat in the Yangming Stomach meridian. It is appropriate to take Mianing Yin added with Shengma (Cimicifuga Rhizome), Jiegeng (Platycodon Root), and Qianghuo, decocted with water and wine. For robust individuals, Yili Jindan (One-Pill Golden Pill) is used to purge downwards; for the elderly and weak, Shiquan Dabu Tang or Shixuan San (Ten-Aperture Powder) or Huangqi Neituo San (Astragalus Internal Support Powder) is used to support internally and expel toxins. If neglected until ulceration occurs with brain matter protruding, death ensues.

The Gui Yi Fang states: At the left or right Taiyang acupoints, carbuncles, boils, or abscesses may occur. If they do not suppurate within five to seven days, toxic vapors flow into the eye sockets and attack the eyes, causing them to remain closed. Medicinal patches should be used to rupture them. After rupture, care must be taken to prevent external wind-water pathogens from entering; once entered, they will damage the eyes, injecting toxins into the eyelids and causing major diseases. A question was asked: What is the condition like when carbuncles occur at both Taiyang acupoints? The answer is: This is named Yong Ju (Brave Carbuncle), also known as Nao Fa (Brain Eruption). The carbuncle belongs to the Foot-Yangming Stomach meridian, resembling a crouching mouse, with simultaneous chills and fever, and swelling of the face and eyes. It is appropriate to take Mianing Yin added with Shengma and Jiegeng, along with Wujin San. If yellow-white pus is obtained upon puncture on the eleventh day, survival is possible; if clear, thin black blood flows, or if ulceration penetrates the brain, death ensues.