刘河间曰∶带下者，任脉之病也。经云，任脉者，起于中极之下，以上毛际，循腹里，上关元，至喉咽，
上颐循面。任脉自胞上过带脉，贯脐上，其病所发，正在过带脉之分，淋沥，故曰带。
慎斋按∶以上一条，序带病本于任脉之考也。
《圣惠方》曰∶妇人带下者，由劳神过度，损动经血，致令身虚，受于风冷，风冷入于脬络，搏其血之所成也。
巢元方曰∶任脉为经之海，任之为病，女子则为带下。手太阳为小肠经，手少阴为心经。心为脏主里，小肠
为腑主表。二经之血，在妇人上为乳汁，下为月水，冲任所统也。冲任脉起于脬内，阴阳过度，则伤脬络，故
风邪乘虚，入于脬中，损冲任之经，伤太阳少阳之血，致令脬络之间，秽与血相兼带而下，冷则白，热则赤。
严用和曰∶妇人赤白带下，此由劳伤冲任，风冷据于胞络，妇人平居，血欲常多，气欲常少，而疾不生。或
气倍于血，气倍生寒，血不化赤，遂成白带。若气平血少，血少生热，血不化红，遂成赤带。寒热交并，赤白
俱下，其脉右尺浮，浮为阳，阳绝者无子。若足冷带下，轻则漏下，甚则崩中，皆心不荣血，肝不藏血所致。
刘河间说：带下病，是任脉发生的疾病。医经记载，任脉起始于中极穴下方，向上经过阴毛边缘，沿着腹部内侧上行至关元穴，再上达咽喉，过颐部循行于面部。任脉从胞宫上方经过带脉，贯穿脐部向上，其发病部位，正是在经过带脉的区域，分泌物淋沥不断，所以称为“带”。
《圣惠方》说：妇人患带下病，是由于精神劳损过度，损伤了经血，导致身体虚弱，受到风冷之邪侵袭，风冷侵入胞络，与血液搏结而形成的。
巢元方说：任脉是经络之海，任脉发生病变，女子就会患带下病。手太阳经是小肠经，手少阴经是心经。心作为脏主里，小肠作为腑主表。这两条经脉的血，在妇人身上，向上化为乳汁，向下化为月经，均由冲脉和任脉统摄。冲脉和任脉起始于胞宫内部，如果房事过度，就会损伤胞络，因此风邪趁虚而入，进入胞中，损害冲任二脉，伤害太阳经和少阳经的血，致使胞络之间，秽浊之物与血液相兼，随带脉而下流，寒证则白带，热证则赤带。
严用和说：妇人赤白带下，这是由于劳倦损伤了冲任二脉，风冷之邪盘踞在胞络之中。妇人在平时，血应当常多，气应当常少，这样疾病就不会产生。如果气倍于血，气盛则生寒，血不能化赤，于是形成白带。如果气平血少，血少则生热，血不能化红，于是形成赤带。寒热交杂，赤白俱下，其脉象右尺部浮，浮脉属阳，阳气绝者不能生育。如果足冷且带下，轻则漏下（非经期少量出血），重则崩中（大量出血），这都是因为心不能荣养血液、肝不能藏血所导致的。
杨仁斋说：带下病的危害，是由于风冷之邪停留宿积所致。先用官桂、干姜、细辛、白芷来发散其寒邪，然后再进行固涩治疗，使用苍术、白术、人参来补气。
Liu Hejian stated: Dai-xia (leukorrhea) is a disease of the Ren Mai (Conception Vessel). The Classics state that the Ren Mai originates below Zhongji (CV3), ascends to the pubic region, follows the interior of the abdomen, reaches Guanyuan (CV4), and continues up to the throat, passing the chin and circulating along the face. The Ren Mai passes above the Bao Gong (uterus) through the Dai Mai (Girdle Vessel), penetrates the umbilicus, and ascends. Its pathological manifestation occurs precisely at the section where it crosses the Dai Mai, with discharge dripping continuously; hence it is called "Dai" (belt/leukorrhea).
Shen Zhai commented: The preceding passage serves as an examination of the origin of Dai-bing (disease of leukorrhea) lying in the Ren Mai.
The *Taiping Shenghui Fang* states: In women, Dai-xia arises from excessive mental labor, which damages the menstrual blood, causing bodily deficiency. This allows Wind-Cold pathogens to invade; when Wind-Cold enters the Pao Luo (bladder/connective tissue network), it contends with the blood, resulting in this condition.
Chao Yuanfang stated: The Ren Mai is the sea of the meridians. When the Ren Mai is diseased, women suffer from Dai-xia. The Hand-Taiyang Meridian is the Small Intestine Meridian, and the Hand-Shaoyin Meridian is the Heart Meridian. As Zang organs govern the interior, the Heart governs the interior; as Fu organs govern the exterior, the Small Intestine governs the exterior. The blood of these two meridians, in women, transforms upward into breast milk and downward into menstruation, both governed by the Chong Mai (Penetrating Vessel) and Ren Mai. The Chong and Ren Mai originate within the Pao Gong. Excessive sexual activity injures the Pao Luo, allowing Wind pathogens to enter the Pao Gong due to deficiency. This damages the Chong and Ren Mai and injures the blood of the Taiyang and Shaoyang meridians. Consequently, between the Pao Luo, turbid matter and blood mix and flow down with the Dai Mai. Cold patterns present as white discharge, while Heat patterns present as red discharge.
Yan Yonghe stated: Red and white Dai-xia in women results from fatigue injuring the Chong and Ren Mai, with Wind-Cold occupying the Pao Luo. Normally, in women, blood should be abundant and Qi relatively scarce for health to be maintained. If Qi exceeds Blood, excess Qi generates Cold; if Blood fails to transform into red, white Dai-xia forms. If Qi is balanced but Blood is deficient, deficiency of Blood generates Heat; if Blood fails to transform into red, red Dai-xia forms. When Cold and Heat intermingle, both red and white discharges occur. The pulse at the Right Chi position is floating; a floating pulse indicates Yang. If Yang is exhausted, conception is impossible. If cold feet accompany Dai-xia, mild cases involve Lou-xia (metrorrhagia/non-menstrual spotting), and severe cases involve Beng-zhong (metrorrhagia/heavy bleeding). These are caused by the Heart failing to nourish Blood and the Liver failing to store Blood.
Yang Renzhai stated: The affliction of Dai-xia stems from the lingering retention of Wind-Cold. First, use Guan Gui (Cinnamon Twig), Gan Jiang (Dried Ginger), Xi Xin (Asarum), and Bai Zhi (Angelica Dahurica) to dissipate the Cold pathogen. Subsequently, employ solidifying methods using Zhu Ru (Atractylodes Macrocephala), Bai Zhu (Atractylodes Lancea), and Ren Shen (Ginseng) to tonify Qi.