《病源论》云∶石痈者，亦是寒气客于肌肉，折于气血，结聚所成。其肿结确实，至牢
有根，核皮相亲，不甚热，微痛，热时自歇。此寒多热少，坚如石，故谓之石痈也，久久热
气乘之，乃有脓。
《短剧方》云∶有石痈者，始微坚皮核相亲着，不赤头，不甚尖，微痛热，热渐自歇，
便极坚如石，故谓石痈难消，又不自熟，熟皆可百日中也。初作便服防己连翘汤，自针气泻
之，敷练石薄，积日可消，若失时不得治，不可消，已有脓者，亦用此薄，则速溃。脓浅易
为火针，诸痈溃后用膏散，依治缓宜法，初作即以小豆薄涂之，亦消也。
治痈结肿，坚如石，或如大核，色不变，或作石痈不消者方∶
鹿角八两（烧作灰），白蔹二两，粗里黄色磨石片一斤，烧石极令赤，纳五升苦酒中复
烧，烧竟复更纳苦酒中，令减半止，捣石作末，并鹿角屑、白蔹屑，余苦酒和如泥，浓涂痈
上，才干更涂取消也。
《千金方》治石痈坚如石不作脓者方∶
生商陆根捣敷之，燥则易。又治漏疖。（《医门方》同之。）
又方∶酢和莨菪子末敷，极亦得。
凡发肿至坚而有根者曰石痈。
又方∶当上灸百壮，石子当出。
又方∶梁上尘、葵茎灰分等，酢和涂。
又方∶蜀桑根白皮，阴干，捣末，消胶，以酒和桑皮敷上，敷上即拔出。
《诸病源候论》说：石痈，也是寒气侵入肌肉，阻碍气血运行，凝结聚结而形成的。其肿胀结块坚实牢固，像有根一样固定，表皮与肿块紧密相连，不太发热，仅有轻微疼痛，发热时自行间歇。这是因为寒多热少，坚硬如石头，所以称为石痈。时间久了，热气侵袭它，才会化脓。
《短剧方》说：患有石痈的人，起初皮核微坚且相亲附着，不红肿，顶端不尖锐，只有轻微疼痛和发热，发热逐渐自行消退，就变得极其坚硬如石头，所以称石痈难以消散，又不会自行熟透化脓，即使化脓也要经过一百天左右。初起时就服用防己连翘汤，并针刺放气泻邪，外敷练石薄（一种药贴），积累时日可以消散；如果错过时机未能治疗，就无法消散；如果已经化脓，也使用这种药贴，则能迅速溃破。脓液浅表容易用火针处理，各种痈疽溃破后使用膏散，依照治疗缓急适宜的方法，初起时即用赤小豆粉调成的糊状物涂抹，也能消散。
治疗痈肿结块，坚硬如石头，或者像大核一样，颜色不变，或者形成石痈无法消散的方剂：
鹿角八两（烧成灰），白蔹二两，粗里黄色的磨石片一斤，将石头烧得极红，放入五升醋中再次烧灼，烧完后再次放入醋中，直到醋减少一半为止，将石头捣碎成粉末，混合鹿角屑、白蔹屑，用剩余的醋调和如泥状，浓涂在痈肿上，干了之后再涂，以求消散。
《千金方》治疗石痈坚硬如石头且不化脓的方剂：
生商陆根捣烂外敷，干燥了就更换。又治疗瘘管疖肿。（《医门方》与此相同。）
另一个方子：应当在上部灸一百壮，石子就会排出。
另一个方子：梁上尘、葵茎灰各等分，用醋调和涂抹。
The *Zhubing Yuanhou Lun* (Treatise on the Pathogenesis and Symptoms of All Diseases) states: Shi Yong (Stone Abscess, a type of hard abscess resembling stone) is formed when cold pathogen invades the muscles, obstructs the flow of Qi and Blood, and causes condensation and accumulation. The swelling and induration are solid and firm, firmly rooted, with the skin adhering closely to the mass. It is not very hot, presents with slight pain, and any fever subsides spontaneously. This condition is characterized by excess cold and deficient heat, being as hard as stone; hence it is called Shi Yong. After a long time, if heat pathogen attacks it, pus will eventually form.
The *Duanju Fang* (Short-Form Prescriptions) states: In cases of Shi Yong, initially the skin and nodule are slightly firm and adhere to each other, without redness or a pointed head, presenting with slight pain and heat, which gradually subsides spontaneously. It then becomes extremely hard like stone, thus referred to as Shi Yong difficult to resolve, and it does not ripen spontaneously; even if it ripens, it may take around one hundred days. At the onset, administer Fangji Lianqiao Tang (Stephania and Forsythia Decoction), puncture to drain Qi and relieve stagnation, and apply Lianshi Bo (a plaster made from processed stone). With continued application over days, it can dissipate. If treatment is delayed, it cannot be resolved. If pus has already formed, applying this plaster will facilitate rapid rupture. For superficial pus, fire needle therapy is suitable. After the rupture of various abscesses, apply ointments and powders according to the method appropriate for the urgency of the condition. At the initial stage, applying a paste made from Adzuki Bean (Vigna angularis) powder also promotes resolution.
Prescription for treating abscess induration, hard as stone or like a large kernel, with unchanged color, or for Shi Yong that fails to resolve:
Lu Jiao (Deer Horn) 8 liang (calcined to ash), Bai Lian (Ampelopsis Radix) 2 liang, coarse yellow whetstone slice 1 jin. Heat the stone until extremely red, immerse it in 5 sheng of vinegar, and reheat. After heating, immerse it again in vinegar until the vinegar reduces by half. Grind the stone into powder, mix with Deer Horn ash and Bai Lian powder, and combine with the remaining vinegar to form a mud-like consistency. Apply thickly to the abscess; reapply when dry to achieve resolution.
The *Qianjin Fang* (Essential Prescriptions Worth a Thousand Gold) prescription for treating Shi Yong that is hard as stone and does not suppurate:
Fresh Shanglu Root (Radix Phytolaccae Acinosae) crushed and applied externally; replace when dry. Also treats fistula and carbuncles. (Identical to the *Yimen Fang*).
Another prescription: Mix Scopolia Seed (Semen Hyoscyami) powder with vinegar and apply externally; this is also effective.
Generally, swelling that is extremely hard and has a root is termed Shi Yong.
Another prescription: Moxibustion should be applied at the affected area for one hundred moxa cones (zhuang); the stone particle will be expelled.
Another prescription: Dust from roof beams and ash from Malva stem in equal parts, mixed with vinegar and applied.
Another prescription: White bark of Shu Sang Root (Cortex Mori Radicis), dried in shade, ground into powder, mixed with gelatin, combined with wine, and applied to the site; application facilitates the expulsion of the stone or pus head.