薛立斋曰∶骨蝼疽，生臂外前廉大骨之后，属手阳明大肠经，由七情不和、积怒积忧积
热所致。初起生瘰如粟米，渐大如豆。旬日大如桃李，坚硬疼痛不可忍。若紫晕开大腐烂斑
点，串通肌肉，遍身拘急发搐，呕哕不食，冷汗自出，滑泄烦躁脉乱者，死。此乃真阴虚极
，而火独亢之故。治当滋其化源，勿以扬汤止沸之法误之。
垂臂发，生于垂臂接骨下臂鹅上。起如鸡鸭卵大，皆由营卫不调之所致也。喜患生实处
而不透内。治宜祛风散邪、消痰化毒，庶不致有大患矣。
立斋曰∶石榴疽，生肘尖上一寸余，属三焦天井穴，由三焦相火，与外湿热相搏而成。
初起一点黄粟小泡，根脚便觉开大，色红坚硬，渐渐肿如复碗，疼痛不可忍，皮破泛出，叠
如榴子，令人寒热时作如疟状。内服蟾酥丸发汗；以菊花烧灰存性，加轻粉少许，研敷肿处
神效；破后用菊花蕊煎汤洗之，顶上用夺命丹以膏盖之。此证以九日得脓为吉，反此为凶。
汤剂如疔疽调治。
痈生于肘撑上，红肿作痛，若溃之，必殒命，不可轻忽。初宜灸之。
丹溪曰∶蝼蛄串，生于臂（小臂也）内中廉，属包络经。由思虑伤脾，脾伤则运化迟，故
生浊液，流于肌肉，脾气郁滞不舒凝结而成。初起筋骨如中流矢，疼痛渐增，漫肿坚硬，不
红不热，手背及内关前后连肿数块，臂膊不能转动，日久其肿块渐次溃破，孔孔时流白浆，
内溃串通诸孔，外势肿硬不消，脓水淋沥如漏；患者必面黄肌瘦，饮食减少，午后寒热交作
，虚证并添，而成败证矣。初宜逍遥散，次用人参养营汤，调和气血、扶助脾胃，十中可保
三、四。若妄投寒凉克伐，损伤脾胃，则活者鲜矣。
肘痈生于肘之围绕，由心肺风火凝结而成，形小为疖，形大为痈。
肘后痈，亦风火郁结，气血凝滞而成。二证初起，俱宜疏散调营。
薛立斋说：骨蝼疽，生于手臂外侧前缘大骨之后方，归属于手阳明大肠经，是由七情（喜、怒、忧、思、悲、恐、惊）失调、长期愤怒、长期忧虑以及积热所导致的。初起时生成瘰疬（颈部或腋下淋巴结结核样肿块），大小如粟米，逐渐增大如豆粒。十日后增大如桃李般大小，质地坚硬，疼痛剧烈难以忍受。如果出现紫色晕圈扩大、腐烂斑点、病灶串通肌肉、全身拘挛抽搐、呕吐呃逆不能进食、冷汗自出、腹泻滑脱、烦躁不安且脉象紊乱的，属于死证。这是因为真阴极度亏虚，而虚火独自亢盛所致。治疗应当滋养化源（脾胃及肾阴），不要用扬汤止沸（治标不治本）的方法误事。
垂臂发，生于下垂手臂接骨下方、臂鹅（指肘部鹰嘴突附近）上方。初起如鸡鸭卵般大小，多由营卫不调所致。此病喜欢生在体表实处而不向内部透发深入。治疗适宜祛风散邪、消痰化毒，这样才不至于酿成大患。
薛立斋说：石榴疽，生于肘尖上一寸多之处，归属于三焦经的天井穴，是由三焦相火与外部湿热相互搏结而成的。初起时为一个黄色粟米状小水泡，根部便觉开大，颜色红且坚硬，渐渐肿胀如倒扣的碗，疼痛剧烈难以忍受，皮肤破裂后泛出，层层叠叠如同石榴籽，使人出现寒热交替发作类似疟疾的症状。内服蟾酥丸以发汗；将菊花烧成灰保留药性，加入少许轻粉，研末敷于肿处，效果极佳；破溃后用菊花蕊煎汤清洗患处，顶部用夺命丹覆盖膏药。此证如果在第九天得脓为吉兆，反之则为凶兆。汤剂治疗参照疔疽的调治方法。
痈生于肘撑（肘关节支撑处）上方，红肿疼痛，如果溃破，必然导致死亡，不可轻视。初起适宜施灸。
朱丹溪说：蝼蛄串，生于手臂（小臂）内侧中间，归属于心包络经。是由思虑过度损伤脾脏，脾脏受损则运化功能迟缓，因此产生浊液，流注于肌肉之间，脾气郁滞不畅凝结而成。初起时筋骨感觉如同被流箭射中，疼痛逐渐增加，漫肿坚硬，不红不热，手背及内关穴前后连片肿胀数块，手臂不能转动，日久肿块逐渐依次溃破，孔孔时常流出白色浆液，内部溃烂串通各个孔洞，外部形势肿硬不消，脓水淋漓如同漏管；患者必定面色萎黄、肌肉消瘦、饮食减少，午后寒热交替发作，虚证并见，从而形成败证（难治之证）。初起适宜用逍遥散，随后用人参养营汤，调和气血、扶助脾胃，十例中可以保全三、四例。如果妄投寒凉攻伐药物，损伤脾胃，那么存活的人就很少了。
Xue Lizhai stated: Gu Lou Ju (Bone Ant Nest Carbuncle) arises behind the large bone on the anterior-lateral aspect of the arm, belonging to the Hand-Yangming Large Intestine Meridian. It is caused by disharmony of the Seven Emotions (Joy, Anger, Worry, Pensiveness, Sorrow, Fear, Fright), chronic anger, chronic worry, and accumulated heat. Initially, it presents as Luoli (Scrofula/Lymphatic Tuberculosis-like lumps) the size of millet grains, gradually enlarging to the size of a bean. After ten days, it enlarges to the size of a plum or peach, becoming hard and causing unbearable pain. If purple halos expand, rotting spots appear, lesions penetrate muscles, the whole body becomes stiff with convulsions, vomiting and hiccups occur preventing food intake, cold sweat pours out, diarrhea with incontinence ensues, irritability arises, and the pulse becomes chaotic, this indicates a fatal condition. This is due to extreme deficiency of True Yin (Zhen Yin) with solitary hyperactivity of Fire. Treatment should nourish the source of transformation (Spleen and Kidney Yin); do not err by using methods that merely stir boiling water to stop boiling (treating symptoms without addressing the root).
Chui Bi Fa (Drooping Arm Abscess) arises below the olecranon process and above the "arm goose" (area near the elbow tip) when the arm is hanging down. It initially swells to the size of a chicken or duck egg, all caused by disharmony of Ying (Nutritive Qi) and Wei (Defensive Qi). It tends to manifest on solid exterior tissues rather than penetrating inward. Treatment should dispel wind, scatter pathogens, resolve phlegm, and transform toxins, thereby avoiding major complications.
Xue Lizhai stated: Shi Liu Ju (Pomegranate Carbuncle) arises slightly more than one cun above the tip of the elbow, belonging to the Tianjing Acupoint of the Sanjiao (Triple Burner) Meridian. It is formed by the interaction of Ministerial Fire of the Sanjiao and external damp-heat. Initially, it appears as a small yellow millet-like blister; the base feels expanded, red and hard. Gradually, it swells like an inverted bowl, causing unbearable pain. When the skin breaks, it exudes layers resembling pomegranate seeds, causing alternating chills and fever similar to malaria. Internally administer Chansu Wan (Toad Venom Pill) to induce sweating; burn Chrysanthemum flowers to ash while retaining their nature, mix with a small amount of Calomel (Qingfen), grind into powder, and apply to the swollen area for miraculous effect; after rupture, wash the area with decoction of Chrysanthemum stamens, and cover the top with Duoming Dan (Life-Taking Pill) under a plaster. For this condition, suppuration on the ninth day is auspicious, otherwise it is ominous. Decoctions should be managed according to the treatment principles for Ding Ju (Malignant Furuncles/Carbuncles).
Yong (Abscess) arising above the elbow support structure presents with redness, swelling, and pain. If it ruptures, it will inevitably lead to death; do not neglect it lightly. Initially, moxibustion is appropriate.
Zhu Danxi stated: Lou Fu Chuan (Mole Cricket Stringing) arises in the middle of the medial aspect of the forearm, belonging to the Pericardium Meridian. It is caused by excessive worrying injuring the Spleen; when the Spleen is injured, its transportation and transformation functions slow down, generating turbid fluids that flow into the muscles. Stagnant and unsmooth Spleen Qi condenses to form it. Initially, the bones and sinews feel as if struck by a stray arrow, with gradually increasing pain. There is diffuse swelling and hardness, without redness or heat. Swelling occurs in several blocks connecting the dorsum of the hand and the areas anterior and posterior to Neiguan Acupoint, rendering the arm immobile. Over time, the masses gradually ulcerate sequentially, with each hole discharging white serous fluid. Internal ulceration connects various holes, while external swelling and hardness persist, with pus dripping like a leak; the patient must present with sallow complexion, emaciation, reduced appetite, alternating chills and fever in the afternoon, and added deficiency syndromes, forming a Bai Zheng (Decadent Syndrome/Terminal Stage). Initially, Xiaoyao San (Free and Easy Wanderer Powder) is suitable, followed by Renshen Yangying Tang (Ginseng Nourishing Constitution Decoction) to harmonize Qi and Blood and assist the Spleen and Stomach; three or four out of ten cases may be saved. If cold and purgative drugs are recklessly administered, damaging the Spleen and Stomach, few will survive.
Zhou Yong (Elbow Abscess) arises around the elbow, formed by the condensation of Wind-Fire from the Heart and Lungs. Small in shape, it is called Jie (Furuncle); large in shape, it is called Yong (Abscess).
Zhou Hou Yong (Posterior Elbow Abscess) is also caused by the stagnation of Wind-Fire and coagulation of Qi and Blood. For both conditions at the initial stage, dispersing and regulating Ying (Nutritive Qi) is appropriate.