病源小便不通，由膀胱与肾俱有热故也，肾主水，膀胱为津液之府，此二经为表里，而
水行于小肠，入胞者为小便，肾与膀胱既热，热入于胞，热气大盛，故结涩令小便不通，少
腹胀，气急甚者，水气上逆，令心急腹满，乃至于死，诊其脉紧而滑直者，不得小便也。（
出第十四卷中）
广济疗下冷疼，小便不通，鸡苏饮子方。
鸡苏（一握） 通草（四两） 石苇（一两炙去毛） 冬葵子（一两半） 杏仁（二两
去皮
尖） 滑石（二两） 生地黄（四两）
上七味切，以水六升，煮取二升半，绞去滓，分温三服，如人行四五里进一服。
又方
冬葵子（五两） 通草（三两） 茅根（四两） 芒硝（二两汤成下） 茯苓（三两） 滑
石（五两）
上六味切，以水九升，煮取三升，去滓，纳芒硝，分温三服，服别相去如人行六七里。
又方
茯苓（二分） 大黄（六分） 芍药 当归 枳实（炙） 白术 人参（各二分）
大麻仁（四分）
上八味切，以水六升，煮取二升，去滓，分温三服，要着芒硝亦得。（并出第四卷中）
崔氏疗小便不通方。
取熏黄如豆许末之，纳小孔中神良。
又方
桑根白皮 猪苓（去皮） 通草（各二两）
上三味切，以水六升，煮取二升，分三服。
又方
鸡屎白如弹丸，以苦酒和服即下，不过三四服佳。（一本云疗淋）
又方
足大KT 趾奇间有青脉，针挑血出，灸三壮愈。（并出第四卷中）
救急主小便不通方。
取印成盐七颗，捣筛作末，用青葱叶尖盛盐末，开便孔纳叶小头于中吹之，令盐末入孔
即通，非常之效。
又方
取嫩 木梢浓汁，可饮半升以来，即愈。
必效疗小便不通，不得服滑药，急闷欲绝方。
盐二升，大铛中熬，以布绵裹熨脐下 之，小盒饭渐通也。（肘后同）
古今录验疗热结小便不通利方。
刮滑石屑，水和涂少腹及绕阴际，干复涂之。（肘后同）
又方
取盐填满脐中，大作艾炷，灸令热为度良。（肘后千金同并出第二十六卷中）
近效疗小便不通，数而微肿方。
取陈久笔头烧作灰，和水服之。
Etiology of difficulty in urination (obstruction of urine flow) lies in the presence of heat pathogens in both the Bladder and Kidney. The Kidney governs water metabolism, while the Bladder is the mansion of body fluids (Jin Ye). These two meridians are exteriorly-interiorly related. Water flows through the Small Intestine, and the portion entering the Bladder (Bao) becomes urine. Once the Kidney and Bladder are affected by heat, the heat pathogen enters the Bladder, causing excessive accumulation of heat qi. This results in obstruction and astringency, leading to difficulty in urination, accompanied by distension in the lower abdomen. In severe cases where Qi urgency is pronounced, water qi rebels upward, causing mental restlessness and abdominal fullness, potentially leading to death. Diagnosis reveals that if the pulse is tight, slippery, and straight, it indicates obstruction of urine flow. (From Volume 14)
Guangji Fang for treating cold pain in the lower jiao and difficulty in urination: Jisu Yinzi Decoction.
Jisu (Houttuynia Cordata Herb, one handful), Tongcao (Tetrapanacis Medulla, four liang), Shiwei (Pyrrosiae Leaf, one liang, processed by roasting and removing hairs), Dongkuizi (Malvae Semen, one and a half liang), Xingren (Prunus Armeniaca Seed, two liang, skin and tip removed), Huashi (Talcum, two liang), Shengdihuang (Rehmanniae Radix, four liang).
The above seven herbs are cut into pieces, decocted in six sheng of water until reduced to two and a half sheng. Strain to remove dregs, divide into three warm doses. Administer one dose every interval equivalent to walking four or five li.
Another prescription:
Dongkuizi (Malvae Semen, five liang), Tongcao (Tetrapanacis Medulla, three liang), Maogen (Imperatae Rhizoma, four liang), Mangxiao (Natrii Sulfas, two liang, added after decoction), Fuling (Poria, three liang), Huashi (Talcum, five liang).
The above six herbs are cut into pieces, decocted in nine sheng of water until reduced to three sheng. Strain to remove dregs, add Mangxiao, divide into three warm doses. Administer each dose at intervals equivalent to walking six or seven li.
Another prescription:
Fuling (Poria, two fen), Dahuang (Rhei Radix et Rhizoma, six fen), Shaoyao (Paeoniae Radix), Danggui (Angelicae Sinensis Radix), Zhishi (Aurantii Fructus Immaturus, roasted), Baizhu (Atractylodis Macrocephalae Rhizoma), Renshen (Ginseng Radix, two fen each), Damaren (Cannabis Fructus, four fen).
The above eight herbs are cut into pieces, decocted in six sheng of water until reduced to two sheng. Strain to remove dregs, divide into three warm doses. Adding Mangxiao is also acceptable. (All from Volume 4)
Cui Shi's prescription for difficulty in urination:
Take Xunhuang (Realgar, prepared with sulfur), grind it into powder like a bean size, and insert it into the urethral opening. This is highly effective.
Another prescription:
Sangbaipipi (Mori Cortex), Zhuling (Polyporus, skin removed), Tongcao (Tetrapanacis Medulla, two liang each).
The above three herbs are cut into pieces, decocted in six sheng of water until reduced to two sheng. Divide into three doses.
Another prescription:
Jishibai (White part of chicken feces), size of a pellet, mix with Kujiu (vinegar) and take orally; urine will pass immediately. Three to four doses are optimal. (Another version states it treats Lin syndrome).
Another prescription:
If there are blue veins between the big toe and the second toe on the foot, puncture with a needle to let blood out, then moxa three zhuang to cure. (All from Volume 4)
Emergency prescription for difficulty in urination:
Take seven salt cubes shaped like seals, crush and sieve into powder. Use the tip of a green onion leaf to hold the salt powder. Open the urethral meatus, insert the small end of the onion leaf into it, and blow air to force the salt powder into the urethra. Urine will flow immediately; this is an extraordinary effect.
Another prescription:
Take the thick juice from tender willow branches (Liu Mu Shao), drink about half a sheng, and it will cure.
Bixiao Fang for difficulty in urination when slippery medicines cannot be taken due to urgent distress:
Two sheng of salt, stir-fried in a large cauldron. Wrap the hot salt in cloth and cotton, and apply as a compress to the area below the umbilicus. Urine will gradually pass. (Same as Zhouhou Fang)
Gujin Luyan Fang for difficulty in urination due to heat accumulation:
Scrape Huashi (Talcum) powder, mix with water, and apply to the lower abdomen and around the genitalia. Reapply when dry. (Same as Zhouhou Fang)
Another prescription:
Fill the center of the umbilicus with salt. Make a large moxa cone and moxa until warmth is felt. This is beneficial. (Same as Zhouhou Fang and Qianjin Fang, all from Volume 26)
Jinxiao Fang for difficulty in urination with frequent urination and slight swelling:
Take old brush heads, burn them into ash, mix with water, and take orally.