学士许叔微曰∶能医伤寒，即能医痘疹；能医痘
疹，即能医痈毒。盖能医伤寒者，知表里、阴阳、寒热、气血、邪正虚实耳！伤寒之邪，从外而内；痘疹
之毒，从内而外。若夫痈毒，有因于风寒暑湿之外袭者，有因于喜怒饮食之内伤者，是以伤寒、痘疹、痈
毒，皆当审其表里、虚实而治之。如痘证之表实者，当清解其表；里实者，即疏利其里，血热者，凉血；
气逆者，理气；邪毒盛者，急宜清热解毒；正气虚者，又当兼补其正焉。气虚者，补气，血虚者，补
血，表虚者，固表∶里虚者，实里。是以治痘有寒热温凉之方，有功解补泻之法。盖泻者，泻其热毒，补
者，补其正虚。昔钱氏痘方，多用清凉，谓当清热毒为要。陈氏专用温补，谓血气充足，而后能化毒成
浆。此皆偏执一见，而不得中正之道者也。故为儿医者，当以二氏之方，折中其间，审其邪正虚实而治
之，万无一失矣。至于痈毒之证，与痘证无二，而治法亦同。如阴毒在内而不起发者，即痘毒之内陷也；
根盘收敛而高耸者，即痘之界地分明而起胀也；脓稠者，即痘之浆浓也；无脓者，即痘毒之不化也；能食
者，即痘毒之尽发于外也，不能食者，毒瓦斯尚壅滞于内也，收口者，即痘之结痂也，臭烂者，即痘之HT 烂
不收也。或解，或攻，或补，或泻，皆当以治痘之法治之。古来疡医，咸以为痛痒疮疡，皆属于火，惟以
寒凉之药治之，或毒反冰伏而不起者，或始终用攻利之药，致正气虚脱而后成不救者。噫！为儿医、疡医
者，能潜心于《灵》《素》仲景诸书，功德无量矣。
学者许叔微说：能够治疗伤寒，就一定能治疗痘疹；能够治疗痘疹，就一定能治疗痈毒。大概能够治疗伤寒的人，是通晓表里、阴阳、寒热、气血、邪正虚实这些道理罢了！伤寒的病邪，是从体表向体内传变；痘疹的毒气，是从体内向外透发。至于痈毒，有的是因为风寒暑湿等外邪侵袭所致，有的是因为喜怒失调、饮食不节等内伤引起，因此治疗伤寒、痘疹、痈毒，都应当审察其表里、虚实的状况来进行治疗。例如痘证中属于表实证的，应当清解其表邪；属于里实证的，就疏通利导其里滞；血分有热的，用凉血法；气机逆乱的，调理气机；邪毒炽盛的，急宜清热解毒；正气虚弱的，又应当兼以补益正气。气虚的，补气；血虚的，补血；表虚的，固护肌表；里虚的，充实脏腑。所以治疗痘疹有寒、热、温、凉不同的方剂，有功在解表、补益、泻下等不同治法。所谓“泻”，是泻除热毒；所谓“补”，是补益正气之虚。过去钱乙（钱氏）治疗痘疹的方子，多用清凉药物，认为清热毒是关键。陈文中（陈氏）专门使用温补药物，认为只有血气充足，才能化毒成浆。这些都是偏执一端的见解，而没有掌握中正之道。所以从事儿科治疗的医生，应当在钱氏和陈氏的方药之间折中取法，审察邪正虚实的情况来治疗，这样就不会有失误了。至于痈毒的病症，与痘疹没有两样，治疗方法也相同。例如阴毒在内而不能起发的，就是痘毒内陷的表现；疮疡根部收敛且高耸的，就是痘疹界地分明且起胀的表现；脓液稠厚的，就是痘疹浆液浓稠的表现；没有脓液的，就是痘毒不能化生的表现；能进食的，就是痘毒全部发散于体外的表现；不能进食的，就是毒气仍然壅滞于体内的表现；疮口愈合的，就是痘疹结痂的表现；溃烂发臭的，就是痘疹腐烂而不收口的表现。无论是解表、攻下、补益还是泻下，都应当按照治疗痘疹的方法来治疗。自古以来的外科医生，都认为痛痒疮疡都属于火邪，只用寒凉药物治疗，结果导致毒气反而被冰伏而不能起发；或者始终使用攻伐利下的药物，致使正气虚弱脱失而最终无法救治。唉！从事儿科和外科治疗的医生，如果能潜心研读《灵枢》、《素问》以及张仲景等人的著作，功德将是无量无边的。
Scholar Xu Shuwei stated: "One who can treat *Shanghan* (Cold Damage) can certainly treat *Douzhen* (Smallpox/Chickenpox); one who can treat *Douzhen* can certainly treat *Yongdu* (Carbuncles and Toxins)." This is because one who can treat *Shanghan* understands the principles of exterior and interior, yin and yang, cold and heat, qi and blood, as well as the excess and deficiency of pathogenic factors and healthy qi. The pathogen of *Shanghan* moves from the exterior to the interior; the toxin of *Douzhen* moves from the interior to the exterior. As for *Yongdu*, some cases are caused by external invasion of wind-cold, summer-heat, and dampness, while others are caused by internal injury due to emotional disturbances or improper diet. Therefore, in treating *Shanghan*, *Douzhen*, and *Yongdu*, one must examine the conditions of exterior/interior and excess/deficiency to determine the treatment. For instance, in *Douzhen* cases presenting with exterior excess, one should clear and release the exterior; in cases of interior excess, one should unblock and purgatively drain the interior; if there is heat in the blood, cool the blood; if qi is rebellious, regulate qi; if pathogenic toxins are flourishing, urgently employ methods to clear heat and detoxify; if healthy qi is deficient, one should simultaneously tonify healthy qi. If qi is deficient, tonify qi; if blood is deficient, tonify blood; if the exterior is deficient, consolidate the exterior; if the interior is deficient, strengthen the interior. Thus, there are formulas for cold, heat, warmth, and cooling in treating *Douzhen*, and methods involving releasing, tonifying, purging, and draining. "Purging" refers to purging heat toxins, while "tonifying" refers to supplementing deficiencies of healthy qi. In the past, Qian Yi's formulas for *Douzhen* mostly used cooling substances, asserting that clearing heat toxins was essential. Chen Wenzhong exclusively used warming and tonifying methods, arguing that only when qi and blood are sufficient can toxins be transformed into pus. These views are all biased and fail to grasp the orthodox middle way. Therefore, pediatricians should strike a balance between the approaches of these two masters, examining the nature of pathogens and healthy qi to treat patients, thereby ensuring no errors. Regarding *Yongdu* conditions, they are no different from *Douzhen*, and the treatment methods are also identical. For example, yin toxins that remain internal and fail to erupt correspond to the sinking inward of *Douzhen* toxins; a lesion base that is gathered and high corresponds to the distinct boundaries and swelling of *Douzhen*; thick pus corresponds to the dense fluid of *Douzhen*; absence of pus corresponds to the failure of *Douzhen* toxins to transform; ability to eat corresponds to toxins fully expressing outwardly; inability to eat corresponds to toxic vapors still stagnating internally; wound closure corresponds to scabbing of *Douzhen*; foul rotting corresponds to the ulceration and failure to heal of *Douzhen*. Whether employing releasing, attacking, tonifying, or purging methods, one should apply the same principles used for treating *Douzhen*. Historically, surgeons have generally believed that pain, itching, sores, and ulcers all belong to fire, relying solely on cold and cooling herbs. Consequently, toxins may become frozen and fail to erupt, or continuous use of purgative and draining drugs may lead to collapse of healthy qi, resulting in untreatable conditions. Alas! Pediatricians and surgeons who devote themselves to studying the *Lingshu* (Spiritual Pivot), *Suwen* (Basic Questions), and the works of Zhang Zhongjing will accrue immeasurable merit.