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Juepen Ju (Abscess at the Clavicular Fossa) arises in the depression anterior to the shoulder. Initially, there is stiffness and tension in the shoulder and back, severe alternating chills and fever, reduced appetite, and difficult urination. Subsequently, redness, swelling, and pain occur; the sore head resembles a blister, followed by the emergence of several additional heads with a hard, indurated base. This condition is caused by the accumulation of heat and dampness in the Foot-Yangming, Hand-Yangming, Hand-Shaoyang, and Foot-Shaoyang meridians. It requires urgent treatment; otherwise, delay will inevitably lead to ulceration. As this meridian is characterized by scanty blood and abundant Qi, the sore mouth may be difficult to heal. In the initial stage, Chansu Wan (Toad Venom Pill) should be used to induce sweating and detoxify, followed by Jingfang Baidu San (Schizonepeta and Saposhnikovia Decoction for Overcoming Toxins). After ulceration, a tonifying and expelling method is appropriate.

Yong (Carbuncle) located below the shoulder and above the upper arm presents as a nodule resembling a peach pit or a goose/duck egg. The skin is red and painful, with swelling throughout the arm both superficially and deeply, except at the elbow joint which is slightly smaller, giving it a lotus-root-like shape; hence it is also called "Oubao Du" (Lotus-Packet Poison). This belongs to the Hand-Taiyang meridians and results from external contraction of Wind-Warmth or Wind-Fire. If the redness and swelling lack an areola, it is a favorable sign (Shun); if an areola is present, it is an unfavorable sign (Ni). At the onset, dispersing and detoxifying measures should be taken immediately. Once pus forms, treatment focuses on clearing the Ying (Nutritive) level and penetrating heat. After ulceration, the primary approach is supporting the Spleen and nourishing Yin.

Jia Yong (Scapular Carbuncle) arises below the posterior shoulder, in the intercostal spaces between the lateral ribs behind the hypochondrium, affecting either the left or right arm. It belongs to the Hand-Taiyang Small Intestine Meridian and is formed by the coagulation of Wind-Fire. If it occurs in the depression at the opening and closing of the bone seams anterior to the lower shoulder and lateral anterior hypochondrium, on either side, it belongs to the Pericardium Meridian and is named Le Ju (Joy Abscess), caused by Blood-Heat and Qi Stagnation. Initially, a nodule appears, gradually becoming swollen and hard, the size of a goose egg, with pain penetrating to the bone, accompanied by headache, chills, and fever. Treatment involves herbs such as Jingjie (Schizonepeta Herba), Fangfeng (Saposhnikovia Root), Xiakucao (Prunella Spica), Beimu (Fritillaria Bulb), Danshen (Salvia Miltiorrhiza), Dideng (Viola Herba), Yinhua (Lonicerae Flos), Lianqiao (Forsythiae Fructus), Danpi (Moutan Cortex), Huangqin (Scutellaria Radix), and Shanzhi (Gardeniae Fructus).

As stated in the Classics: "West wind arises in autumn; disease affects the Lung-Shu point and the shoulder/back." Therefore, diseases in autumn affect the shoulder and back. Consequently, shoulder and back pain should undoubtedly be attributed to the Lung. However, distinctions must be made among Cold-Damp, Wind-Heat, Excess Qi, Deficient Qi, and Phlegm-Fluid retention. The Lung governs the skin and hair; when pathogens invade the skin and hair and transmit to the Lung, they obstruct the meridians, causing pain. This should be treated with acrid-warm herbs to disperse them. If Wind-Heat attacks the Lung, causing severe Qi stagnation, Wind-Heat should be drained using acrid-cool herbs to resolve it. Furthermore, the Lung governs Qi transformation and regulates the whole body. If Qi is excessive, it becomes congested and fails to circulate, blocking the meridians and causing shoulder and back pain. If Qi and Blood are deficient, shortness of breath occurs, also leading to shoulder and back pain. Excess conditions are treated with bitter-acid draining methods, while deficiency conditions are treated with sweet-warm tonifying methods. Additionally, the Lung is the vessel storing Phlegm. Pre-existing Phlegm in the Lung flows with Qi into the meridians, causing obstruction and pain. This requires regulating Phlegm and smoothing Qi, as clear Qi leads to the resolution of Phlegm. Another syndrome involves pain due to rebellious Kidney Qi. This rebellious Qi is Yin Qi. When Kidney Yang is deficient, turbid Yin Qi ascends to disturb the Clear Yang position. This requires strong tonification of True Yang using sweet-acrid-warm herbs to drive out Yin pathogens. Specifically treating only Lung Qi would constitute an unjustified attack on healthy tissue. Arm pain may result from the binding of Cold-Damp-Wind, Phlegm-Fluid flowing into the meridians, injury to sinews from lifting heavy objects, or Qi-Blood stasis obstructing the meridians. Therapeutic methods include dispersing for Wind, warming for Cold, and resolving Phlegm. For blood stasis due to sinew injury, the treatment is to unblock the meridians and invigorate Blood. Among these methods, Jianghuang (Curcuma Longae Rhizoma) and Guizhi (Cinnamomi Ramulus) should always be added as guiding herbs because their action spreads horizontally, targeting the arms.