食积腰痛者，食滞于脾而气滞于肾也。夫肾受脾之精而藏焉者也。若食不消，则所输于
肾者
，非精微之气，为陈腐之气矣。而肾受之，乱气伤精，能无痛乎。亦有醉饱入房太甚，酒食
之积，乘虚流入少阴，腰痛难以俯仰者，疏瀹其源，澄清其流，此大法也。或云四物合二陈
，加麦芽、神曲、杜仲、黄柏、官桂、砂仁、葛花、桔梗之类。
神曲酒
陈久神曲一块，烧通红 老酒，去神曲，通口吞青娥丸，两服顿愈。
青娥丸（见前。）
瘀血腰痛者，闪挫及强立举重得之。盖腰者一身之要，屈伸俯仰，无不由之。若一有损
伤，则血脉凝涩，经络壅滞，令人卒痛，不能转侧，其脉涩，日轻夜重者是也。
茴香酒
破故纸（炒香） 茴香（炒） 辣桂（等分）
上为末，每服二钱，热酒调，食前。故纸主腰痛，主行血。（《仁斋》）
《和剂》复元通气散 治闪挫腰胁痛。
舶上茴香（炒） 穿山甲（蛤粉炒，各二两） 延胡索（醋炒） 白牵牛（炒） 甘草（炙） 陈
皮（去白，各一两） 楠木香（一两半）
上为末，每服一钱，热酒调下，食前。
经云∶左右者，阴阳之道路也。又云∶肝生于左，肺藏于右，所以左属肝，肝藏血，肝
也，血，阴也，乃外阳而内阴也。右属肺，肺主气，气，阳也，肺，阴也，乃外阴而内阳也
。由阴阳五脏气血分属，是以左胁之痛，多因留血，右胁之痛，悉是痰积，岂可一概而言乎
。虽痰气固亦有流注于左者，然必与血相搏而痛，不似右胁之痛，无关于血也。
食积导致的腰痛，是因为食物停滞在脾脏，导致气机阻滞于肾脏。肾是接受并贮藏脾脏输送来的精微物质的器官。如果食物不能消化，那么输送到肾脏的，就不是精微之气，而是陈腐之气了。肾脏接受了这种浊气，会导致气机紊乱、损伤肾精，怎么能不疼痛呢？也有因为醉酒饱食后行房事过度，酒食之积乘虚侵入少阴经，导致腰痛且难以俯仰的情况，治疗的大法是疏通源头，澄清流弊。有人说可以用四物汤合二陈汤，加入麦芽、神曲、杜仲、黄柏、官桂、砂仁、葛花、桔梗等药物。或者用陈久神曲一块，烧至通红，投入老酒中，去掉神曲，趁热吞服青娥丸，服用两次即可痊愈。青娥丸（见前文）。
瘀血导致的腰痛，多由闪挫扭伤或强行站立举重引起。腰部是人体身体的关键部位，屈伸俯仰的动作没有不依赖腰部的。一旦受到损伤，血脉就会凝滞不畅，经络壅塞阻滞，使人突然剧痛，不能转身侧身，脉象涩，白天轻晚上重就是这种情况。茴香酒：破故纸（炒香）、茴香（炒）、辣桂（等分），以上研为细末，每次服用二钱，用热酒调服，饭前服用。破故纸主治腰痛，主通行血脉。（《仁斋直指方论》）《和剂局方》复元通气散，治疗闪挫引起的腰胁痛。舶上茴香（炒）、穿山甲（蛤粉炒，各二两）、延胡索（醋炒）、白牵牛（炒）、甘草（炙）、陈皮（去白，各一两）、楠木香（一两半），以上研为细末，每次服用一钱，用热酒调下，饭前服用。
经文说：左右两侧，是阴阳运行的道路。又说：肝气生于左侧，肺气藏于右侧，所以左侧属于肝，肝贮藏血液，血属阴，但肝体阴而用阳（外阳内阴）。右侧属于肺，肺主管气，气属阳，但肺体阴而用阳（外阴内阳）。由于阴阳、五脏、气血的分属不同，所以左侧胁肋的疼痛，多因瘀血停留所致；右侧胁肋的疼痛，完全是痰饮积聚所致，怎么能一概而论呢？虽然痰气确实也有流注于左侧的情况，但必然与血相搏结而致痛，不像右侧胁肋的疼痛那样与血无关。
Lumbar pain caused by food stagnation arises from food retention in the Spleen and Qi stagnation in the Kidney. The Kidney receives and stores the essence transmitted by the Spleen. If food fails to digest, what is transmitted to the Kidney is not the subtle Qi of nutrients, but rather stale and turbid Qi. Upon receiving this, the Kidney suffers from chaotic Qi damaging its essence; how can there be no pain? There are also cases where excessive sexual intercourse after drunkenness or overeating allows the accumulation of wine and food to enter the Shaoyin (Lesser Yin) channel due to deficiency, causing lumbar pain with difficulty in bending forward and backward. The general principle of treatment is to dredge the source and clarify the flow. Some suggest using Siwu Tang (Four Substances Decoction) combined with Erchen Tang (Two Aged Substances Decoction), adding Maiya (Sprouted Hordeum Vulgare Fructus), Shenqu (Medicated Leaven), Duzhong (Eucommiae Cortex), Huangbai (Phellodendri Cortex), Guigui (Cinnamomi Ramulus), Sharen (Amomi Fructus), Geghua (Broussonetiae Flos), Jiegeng (Platycodonis Radix), etc. Alternatively, take one piece of aged Shenqu (Medicated Leaven), heat it until red-hot, immerse it in strong yellow wine, remove the Shenqu, and swallow Qing'e Wan (Qing'e Pill) orally while warm. Two doses result in complete recovery. Qing'e Wan (see previous section).
Lumbar pain caused by blood stasis results from sprains, strains, or standing upright and lifting heavy objects abruptly. The waist is the pivot of the body; flexion, extension, bending, and turning all depend on it. Once injured, blood vessels become congealed and sluggish, and meridians become obstructed and stagnant, causing sudden severe pain and inability to turn the body. The pulse is choppy (Se), and symptoms are lighter during the day and heavier at night. Huixiang Jiu (Fennel Wine): Po Guzhi (Psoraleae Fructus, stir-fried until fragrant), Huixiang (Foeniculi Fructus, stir-fried), Lagui (Cinnamomi Ramulus, equal parts). Grind into powder, take 2 qian per dose, mixed with hot wine, before meals. Po Guzhi treats lumbar pain and promotes blood circulation. (*Ren Zhai Zhi Zhi Fang Lun*) Heji Jufang's Fuyuan Tongqi San (Revive the Origin and Promote Circulation Powder) treats lumbar and hypochondriac pain due to sprains and strains. Bo Shang Huixiang (Foeniculi Fructus imported from overseas, stir-fried), Chuanshanjia (Manis Squama, stir-fried with clam powder, 2 liang each), Yanshusuo (Corydalis Rhizoma, stir-fried with vinegar), Bai Qianniu (Pharbitidis Semen, stir-fried), Gancao (Glycyrrhizae Radix et Rhizoma, honey-roasted), Chenpi (Citri Reticulatae Pericarpium, white pith removed, 1 liang each), Nanmuxiang (Agarwood Lignum, 1.5 liang). Grind into powder, take 1 qian per dose, taken down with hot wine, before meals.
The Classic states: "The left and right are the pathways of Yin and Yang." It also states: "Liver Qi arises on the left, Lung Qi resides on the right." Therefore, the left belongs to the Liver; the Liver stores Blood. Blood is Yin, yet the Liver exhibits external Yang and internal Yin. The right belongs to the Lung; the Lung governs Qi. Qi is Yang, yet the Lung exhibits external Yin and internal Yang. Due to the distinct attributions of Yin-Yang, Zang-Fu organs, Qi, and Blood, pain in the left hypochondrium is mostly due to retained Blood, whereas pain in the right hypochondrium is entirely due to Phlegm accumulation. How can they be treated uniformly? Although Phlegm-Qi may indeed flow to the left, it must contend with Blood to cause pain, unlike right-sided hypochondriac pain, which is unrelated to Blood.