洗有荡涤之功。使气血疏通以舒其毒。则易于溃散而无壅滞也。凡肿四肢。 渍之。在腰腹背。淋之。在
下部。浴之。如用药二两。以水二升煎升半。用布帛或棉蘸洗。稍凉再易之。日用三五次。甚者日夜不住。
以肿消痛止为度。如已溃时及拔筒后。先去旧药。用方盘靠身于疮下放定。随用猪蹄汤以软绢淋洗
疮上。并入孔内。轻手捺净内脓。庶败腐宿脓。随汤而出。以净为度。再以软帛叠七八重。勿令太干。带汤
覆于疮上。两手轻盈旋按片时。帛温再换。如此洗按四五次。流通气血。解毒止疼。去瘀脱腐。此手功之
要法。大疮不可缺也。洗时冬月要猛火以逼寒气。夏月要明窗以御风寒。若不慎此。轻则有妨收口。重
则必变纯阴。
盖用猪蹄汤者。使毒闻腥而速腐耳。腐未净。敷玄珠膏。腐已净。敷玉红膏。俱以黑膏盖之。如四边根已
消。则不必用箍药。更加大补得宜。其功更远。
疮一月不治则有虫。用艾煎汤投白矾三钱洗之。为艾性能杀虫也。
疮由气血冷不收口者。用艾煎汤洗之。更烧艾熏之。为艾性辛热以助阳气也。
未溃之前。及已照之后。用葱艾汤洗之。
文蛤散 治肿疡 痛。不问已溃未溃。洗之肿宽痛减。
文蛤（三五两打碎去虫） 葱白（十八根）
水煎淋洗。
猪蹄汤 已溃流脓时。用此消毒瓦斯。去恶肉。回死肌。润疮口。散风消肿。腐尽则已。
当归 白芷 羌活 甘草 赤芍 黄芩 蜂房（等分）
上为粗末。先将 猪前蹄一。使水六碗煮蹄软为度。去面上油并汤下浊脚。取清汁。入药一两。煎数
十沸。绢滤去渣。候温用软绢淋洗。
背疽轻易者。用此以代前汤。
当归 白芷 独活 甘草（各二钱） 葱头（五个）
水二碗煎用。
一、阴疮黑陷而不痛者。用艾绒一斤。硫黄、雄黄各五钱为末。同艾水煮半日。水将干。取艾出。捣烂温
敷患处。再煮再易。十余次以知痛则生。不知痛出紫血者死。然必内服大补回阳之药。助之以成
功。
一、疮腐臭秽者。用蛇床子二两、皮硝一两、水煎洗之。
一用白矾四两、雄黄一两为末。用两许滚水冲洗。
军持露 治溃疡腐尽。见新肉珠时。用此洗之。以助生肌。
乳香 没药 儿茶 轻粉（等分）
为末。每用三五钱。水煎黄色洗之。或猪蹄汤煎洗尤佳。
洗涤法具有荡涤的功效。能使气血疏通，从而舒缓毒邪。这样疮疡就易于溃破消散，而不会出现壅滞的情况。凡是四肢部位的肿胀，采用浸泡的方法；腰腹部和背部的肿胀，采用淋洗的方法；下部（如会阴、下肢等）的肿胀，采用洗浴的方法。例如用药二两，加水二升，煎至一升半。用布帛或棉蘸取药液清洗患处，稍凉后更换新的药液。每天使用三到五次，病情严重的则日夜不间断地清洗，以肿胀消退、疼痛停止为度。如果疮疡已经溃破或者拔火罐之后，先去除旧的药物，将方盘靠在身体上，置于疮口下方固定好。随即用猪蹄汤以软绢淋洗疮面，并灌入孔窍内。用手轻轻按压，排净内部的脓液，使败坏的腐肉和陈旧的脓液随汤汁排出，以排净为度。再用软帛折叠七八层，不要让它太干，带着汤汁覆盖在疮面上。双手轻柔地旋转按压片刻，帛巾变温后再更换。如此清洗并按压四到五次，以流通气血，解毒止痛，祛除瘀血，脱落腐肉。这是手法操作的重要方法，对于大的疮疡是不可缺少的。清洗时，冬季要用猛火以驱逼寒气，夏季要打开明亮的窗户以抵御风寒。如果不谨慎注意这些，轻则妨碍疮口收敛愈合，重则必然转变为纯阴证（指阳气极度衰微的危重证候）。
之所以使用猪蹄汤，是为了让毒邪闻到腥味而迅速腐烂。腐肉未净时，敷贴玄珠膏；腐肉已净时，敷贴玉红膏。都用黑膏覆盖。如果四周的肿根已经消退，就不必再用箍围药，再加上适当的大补药物，疗效会更好。
疮疡一个月不治疗就会生虫，用艾叶煎汤加入白矾三钱清洗，因为艾叶的性能能够杀虫。
疮疡由于气血寒冷而不能收敛愈合的，用艾叶煎汤清洗，再烧艾叶熏烤患处，因为艾叶性味辛热，可以助长阳气。
文蛤散：治疗肿疡疼痛，不论是否已经溃破，清洗后肿胀缓解、疼痛减轻。
文蛤（三五两，打碎，去掉虫子） 葱白（十八根）
用水煎煮，淋洗患处。
猪蹄汤：疮疡已经溃破流脓时，用此方消毒瓦斯（此处指消除局部不良环境/毒素），去除恶肉，恢复死肌，滋润疮口，疏散风邪，消除肿胀。直到腐肉排尽为止。
当归 白芷 羌活 甘草 赤芍 黄芩 蜂房（各等分）
以上药材研成粗末。先将一个猪前蹄，用水六碗煮至蹄子软烂为度。去掉表面的油脂以及汤下的浑浊沉淀物，取清汁。加入药材一两，煎煮数十次沸腾。用绢布过滤去渣，待温度适宜后用软绢淋洗。
背部疽疮属于容易治疗的类型，用此方代替前面的猪蹄汤。
当归 白芷 独活 甘草（各二钱） 葱头（五个）
用水二碗煎煮使用。
一、阴疮颜色黑陷且不痛的，用艾绒一斤，硫黄、雄黄各五钱研为末，与艾水同煮半天。水快干时，取出艾绒，捣烂后温热敷于患处。再煮再换，十几次后如果感到疼痛说明有生机，如果流出紫血而不痛则预后不良。然而必须内服大补回阳的药物，辅助以取得成功。
军持露：治疗溃疡腐肉已尽，见到新肉如珠状时，用此方清洗，以促进生肌。
乳香 没药 儿茶 轻粉（各等分）
研为末。每次使用三五钱，用水煎至黄色后清洗。或者用猪蹄汤煎洗效果更佳。
Washing has the function of cleansing and scouring. It unblocks the flow of Qi and Blood, thereby relieving toxicity. This facilitates the rupture and dispersion of the lesion without stagnation. For swelling in the four limbs, soak (Zi) the area; for swelling in the waist, abdomen, and back, pour (Lin) over the area; for swelling in the lower body, bathe (Yu). For example, use two liang of herbs with two sheng of water, decoct until one and a half sheng remains. Dip cloth or cotton into the solution to wash the affected area, replacing it when slightly cooled. Use three to five times daily; for severe cases, wash continuously day and night. Continue until the swelling subsides and pain ceases. If the ulcer has already ruptured or after cupping removal, first remove old medications. Place a square pan against the body under the wound to secure it. Then, use Pig Trotter Soup (Zhuti Tang) to pour over the wound with soft silk, irrigating into any sinuses. Gently press to clear internal pus, allowing necrotic tissue and old purulent matter to exit with the soup, continuing until clean. Fold soft cloth seven or eight layers, ensuring it is not too dry, and cover the wound while retaining moisture. Press gently with both hands for a moment, replacing the cloth when it warms. Repeat this washing and pressing four to five times to promote Qi and Blood circulation, resolve toxicity, relieve pain, remove stasis, and slough off necrosis. This manual technique is essential and indispensable for large ulcers. In winter, use strong fire to drive out cold qi during washing; in summer, ensure bright ventilation to guard against wind and cold. Neglecting these precautions may, at best, hinder wound closure, or at worst, lead to a Pure Yin syndrome (a critical condition characterized by extreme Yang deficiency).
Pig Trotter Soup (Zhuti Tang) is used because the fishy smell accelerates the putrefaction of toxins. If necrotic tissue is not yet clean, apply Xuanzhu Ointment (Xuanzhu Gao); if clean, apply Yuhong Ointment (Yuhong Gao). Cover both with Black Paste (Hei Gao). If the induration at the margins has resolved, encircling agents (Gu Yao) are unnecessary. With appropriate tonic therapy, the therapeutic effect will be even greater.
If an ulcer is untreated for a month, worms may develop. Wash with Mugwort Decoction (Ai Ye Tang) added with three qian of Alum (Bai Fan), as Mugwort (Ai Ye) possesses insecticidal properties.
For ulcers that fail to close due to cold Qi and Blood, wash with Mugwort Decoction (Ai Ye Tang) and fumigate with burning Mugwort, as Mugwort is acrid and hot, assisting Yang Qi.
Before rupture and after incision/drainage, wash with Scallion and Mugwort Soup (Cong Ai Tang).
Wenge Powder (Wenge San): Treats painful swelling (Zhongyang). Whether ruptured or not, washing reduces swelling and alleviates pain.
Wenge Shell (Wen Ge) (3-5 liang, crushed, insects removed) Scallion White (Cong Bai) (18 stalks)
Decoct in water and pour/wash over the area.
Pig Trotter Soup (Zhuti Tang): Used when ulcers have ruptured and are discharging pus. It disinfects, removes foul flesh, revitalizes dead muscle, moistens the wound margin, disperses wind, and reduces swelling. Continue until all necrotic tissue is eliminated.
Dang Gui (Angelicae Sinensis Radix) Baizhi (Angelicae Dahuricae Radix) Qianghuo (Notopterygii Rhizoma et Radix) Gancao (Glycyrrhizae Radix et Rhizoma) Chishao (Paeoniae Radix Rubra) Huangqin (Scutellariae Radix) Fengfang (Vespa) (Equal parts)
Grind into coarse powder. First, boil one front pig trotter in six bowls of water until soft. Remove surface oil and cloudy sediment from the bottom. Take the clear broth. Add one liang of the herbal mixture, boil several times until boiling. Filter through silk to remove dregs. When warm, wash with soft silk.
For mild cases of Back Carbuncle (Beiju), this formula can replace the previous soup.
Dang Gui (Angelicae Sinensis Radix) Baizhi (Angelicae Dahuricae Radix) Duhuo (Angelicae Pubescentis Radix) Gancao (Glycyrrhizae Radix et Rhizoma) (2 qian each) Congtou (Scallion Head) (5 pieces)
Decoct in two bowls of water for use.
1. For Yin Ulcer (Yinchuang) presenting as black, depressed, and painless: Use one jin of Mugwort Floss (Aijiu), five qian of Realgar (Xionghuang), and five qian of Sulfur (Liuhuang). Grind into powder. Boil with Mugwort water for half a day. When water is nearly dry, remove the Mugwort, pound it into a paste, and apply warmly to the affected area. Re-boil and re-apply. After more than ten applications, if pain is felt, there is hope for recovery; if purple blood flows without pain, the prognosis is fatal. However, internal administration of major tonics to restore Yang is necessary to assist success.
2. For ulcers with putrid and foul odor: Wash with a decoction of two liang of Cnidium Fruit (Shechuangzi) and one liang of Mirabilite (Pixiao).
3. Use four liang of Alum (Bai Fan) and one liang of Realgar (Xionghuang) ground into powder. Rinse with a sufficient amount of boiling water.
Junchi Lu: Used for ulcers where necrotic tissue has been completely cleared and new granulation tissue appears like pearls. Wash with this to promote tissue regeneration.
Ruxiang (Olibanum) Moyao (Myrrha) Ercha (Catechu) Qingfen (Calomelas) (Equal parts)
Grind into powder. Use three to five qian per dose. Decoct in water until yellow and wash. Using Pig Trotter Soup (Zhuti Tang) for decoction and washing is particularly effective.