滴沥涩痛谓之淋，急满不通谓之闭。五淋之别，虽有气、砂、血、膏、劳之异，然皆肾虚而膀胱生热也。若小便赤
涩，灸其下脘。小便痛沥，灸其关元。五淋之症，皆宜灸其中极。
下脘（见臌胀。）
关元（见心腹痛。）
中极（见疝气。）
经谓胞移热于膀胱则溺血，是症未有不本于热者。当灸关元数忙。
关元（见心腹痛。）
遗溺者，由于中气虚衰，不能摄固所致。老年下元不足，孩提脬气未固多有之。总当灸其三阴。若小便频数者灸大
敦，小儿遗尿者灸气海。
三阴（见痿症。）
大敦（见尸厥。）
气海（见劳伤。）
便血之症，有肠风，有脏毒。如下鲜血，大便燥结，名曰肠风。血色黯浊，大便溏泻，名曰脏毒。脏毒者灸肾俞，
肠风者灸会阳。
肾俞（见痹症。）
会阳（尾尻骨两旁，各开二寸，尻骨节上两旁，各开寸半亦可。）
肺与大肠相为表里，故肺热则肛藏，肺虚则肛脱。或因肠风痔漏，或因久痢久泻，或因产妇用力太早，或因小儿叫
啼伤气。总须上灸百会，下灸会阳。
百会（见中风。）
会阳（见便血。）
古人论痔，有牝、牡、虫、血之分。其实皆大肠积热所致。当灸会阳几壮，庶冀而安。
会阳（见便血。）
泄泻有五，乃脾虚、肾虚、湿寒、湿热、食积也。脾虚则食少便频，肾虚则五更作泻，湿寒则便溏溺白，湿热则下
利肠垢，食泻则吞酸嗳腐。在医家当分而治，在灸家先取天枢，其次会阳之穴。
天枢（见劳伤。）
会阳（见便血。）
滴沥不畅且伴有涩痛称为淋证，腹部急迫胀满且小便不通畅称为闭证。五淋（气淋、砂淋、血淋、膏淋、劳淋）的区别，虽然表现为气、砂、血、膏、劳的不同类型，但其根本原因都是肾虚而膀胱产生内热。如果小便颜色红赤且涩滞，应艾灸下脘穴。如果小便疼痛且滴沥不尽，应艾灸关元穴。五淋的症状，都适宜艾灸中极穴。
下脘穴（参见鼓胀章节）。
关元穴（参见心腹痛章节）。
中极穴（参见疝气章节）。
《内经》记载，胞宫的热邪转移至膀胱会导致尿血，这种病症没有不是以热邪为本源的。应当艾灸关元穴若干壮。
关元穴（参见心腹痛章节）。
遗尿症，是由于中气虚衰，不能固摄所致。老年人下元不足，婴幼儿膀胱之气未固，多有此症。总归应当艾灸三阴交穴。如果小便频数，应艾灸大敦穴；小儿遗尿者，应艾灸气海穴。
三阴交穴（参见痿症章节）。
大敦穴（参见尸厥章节）。
气海穴（参见劳伤章节）。
便血的症状，有肠风便血和脏毒便血两种。如果排出鲜红色血液，大便干燥结块，称为肠风。如果血色暗浊，大便溏泻，称为脏毒。脏毒便血者艾灸肾俞穴，肠风便血者艾灸会阳穴。
肾俞穴（参见痹症章节）。
会阳穴（位于尾骨两旁，各开二寸处；尾骨节上两旁，各开一寸半处亦可）。
肺与大肠互为表里，所以肺热则肛门紧缩，肺虚则肛门脱出。或者因为肠风痔漏，或者因为久痢久泻，或者因为产妇用力过早，或者因为小儿啼哭损伤元气。总之需要上部艾灸百会穴，下部艾灸会阳穴。
百会穴（参见中风章节）。
会阳穴（参见便血章节）。
古人论述痔疮，分为牝痔、牡痔、虫痔、血痔四种。其实都是由大肠积热所致。应当艾灸会阳穴若干壮，希望得以安宁。
会阳穴（参见便血章节）。
泄泻有五种类型，分别是脾虚泄泻、肾虚泄泻、湿寒泄泻、湿热泄泻、食积泄泻。脾虚则饮食减少且排便频繁，肾虚则五更时分作泻，湿寒则大便溏薄且小便清白，湿热则下利肠道垢腻之物，食积泄泻则吞酸嗳腐。在医生诊治时应当分别施治，在灸法治疗时先选取天枢穴，其次是会阳穴。
天枢穴（参见劳伤章节）。
会阳穴（参见便血章节）。
Dribbling, difficult urination accompanied by astringent pain is termed Lin syndrome (Strangury). Sudden abdominal fullness and inability to pass urine is termed Bi syndrome (Urinary Retention). Although the five types of Lin syndrome (Qi Lin [Gas Strangury], Sha Lin [Gravel Strangury], Xue Lin [Blood Strangury], Gao Lin [Paste Strangury], Lao Lin [Labor Strangury]) differ in manifestation as gas, gravel, blood, paste, or labor-induced, their root cause is always Kidney deficiency with Heat generating in the Bladder. If urine is red and astringent, moxa the Xiawan (CV10) acupoint. If urination is painful and dribbling, moxa the Guanyuan (CV4) acupoint. For symptoms of the five Lin syndromes, it is advisable to moxa the Zhongji (CV3) acupoint.
Xiawan (See Drum Distension chapter).
Guanyuan (See Heart and Abdominal Pain chapter).
Zhongji (See Hernia chapter).
The Classics state that when Heat from the Bao (Uterus/Bladder) shifts to the Bladder, it causes hematuria; this condition invariably stems from Heat. One should moxa the Guanyuan (CV4) acupoint for several moxa cones.
Guanyuan (See Heart and Abdominal Pain chapter).
Enuresis results from deficiency and decline of Middle Qi, leading to an inability to consolidate and hold. Elderly individuals with insufficiency of the Lower Yuan, and infants whose Bladder Qi has not yet solidified, often suffer from this. Generally, one should moxa the Sanyinjiao (SP6) acupoint. If there is frequent urination, moxa the Dajun (LR1) acupoint; for children with enuresis, moxa the Qihai (CV6) acupoint.
Sanyinjiao (See Flaccidity Syndrome chapter).
Dajun (See Corpse-like Coma chapter).
Qihai (See Labor Injury chapter).
Hematochezia includes Changfeng (Intestinal Wind) and Zangdu (Visceral Toxin). If fresh red blood is passed and stools are dry and constipated, it is named Changfeng. If the blood color is dark and turbid and stools are loose, it is named Zangdu. For Zangdu, moxa the Shenshu (BL23) acupoint; for Changfeng, moxa the Huiyang (BL35) acupoint.
Shenshu (See Bi Syndrome chapter).
Huiyang (Located on both sides of the coccyx, two cun lateral; alternatively, one and a half cun lateral to the upper side of the coccygeal joint).
The Lung and Large Intestine are exterior-interior partners. Thus, Lung Heat causes anal constriction, while Lung Deficiency causes anal prolapse. This may also be due to intestinal wind and hemorrhoidal fistulas, chronic dysentery or diarrhea, premature exertion by parturient women, or Qi injury from prolonged crying in infants. Generally, one must moxa Baihui (GV20) above and Huiyang (BL35) below.
Baihui (See Stroke chapter).
Huiyang (See Hematochezia chapter).
Ancients discussed hemorrhoids, distinguishing between Pin (Female), Mu (Male), Chong (Worm), and Xue (Blood) types. In reality, all are caused by accumulated Heat in the Large Intestine. One should moxa the Huiyang (BL35) acupoint for several moxa cones, hoping for peace and relief.
Huiyang (See Hematochezia chapter).
There are five types of Diarrhea: Spleen Deficiency, Kidney Deficiency, Damp-Cold, Damp-Heat, and Food Stagnation. Spleen Deficiency leads to poor appetite and frequent bowel movements; Kidney Deficiency leads to dawn diarrhea; Damp-Cold leads to loose stools and clear urine; Damp-Heat leads to passage of foul-smelling intestinal mucus; Food Stagnation leads to acid regurgitation and belching of rotten food. Physicians should treat them according to differentiation; Moxibustion practitioners should first select the Tianshu (ST25) acupoint, followed by the Huiyang (BL35) acupoint.
Tianshu (See Labor Injury chapter).
Huiyang (See Hematochezia chapter).