有一种色欲过度。腠理疏豁。寒邪乘虚而直入于三阴之经。名曰阴症。乃初起不见热症。暴
病也。所谓直入阴经者。乃心肝脾肺肾之经。受肃杀严寒之气。由肌肉间之经络。直逼脏中。或
心或肝或脾或肺或肾。生气被伤。不得通达。便成阴症也。此时急以热药。根据经通之。渐渐温热
。使脏中热气。得通于肌肉间之经络也。须以理中汤四逆汤真武汤等类。辨症治之。有一种阴症
直入肾少阴之经。欲事后感寒。或多欲阳虚。寒乘虚入。脐腹绞痛。手足青紫。厥逆。脉微欲绝
。急煎附子理中与之。外用葱一束。如茶盏大。扎紧切一
指浓一段。置脐上。以熨斗火熨之。热气透入腹。逼邪外出为佳。
真武汤
附子（臣） 茯苓（臣） 白芍（酒炒佐） 白术（君） 生姜（使）
四逆汤
甘草（炙臣） 干姜（佐） 附子（君）
病甚者用重剂。
有一种戴阳症。两颧浅红。红必游移无定。或烦躁发狂。欲坐卧泥水中。渴欲饮水。复不能
饮。大便自利。或秘结。小便清白。或淡黄。咽喉或痛。或不痛。脉沉迟而微细。肌表虽热。重
按之则不热。甚者其冷透手。此阴盛格阳也。又有面红烦躁。遍舌生疮生刺。舌敛缩如荔枝状。或
痰涎涌盛。喘急。小便频数。口干引饮。两唇焦裂。喉间如烟火上攻。两足心如烙。脉洪大而
数无伦。按之有力。（亦有按之微弱者）扪其身烙手。此肾虚火不归经。素问所谓脉从病反者也
。俱用十全大补汤。吞八味丸。或大剂八味饮。合生脉散。人参熟地可用至二
三两。附子可用至三五钱。如认作白虎。立死。
十全大补汤
黄 （蜜炙） 肉桂 四君 四物
八味丸
即六味饮加附子肉桂。
有一种情况是色欲过度，导致腠理（皮肤毛孔及肌肉间隙）疏松敞开，寒邪趁虚直接侵入三阴经，称为阴症。这是初起时不见热象的暴病。所谓“直入阴经”，是指心、肝、脾、肺、肾的经络受到肃杀严寒之气的侵袭，寒气由肌肉间的经络直接逼迫至脏腑内部，无论是心、肝、脾、肺还是肾，其生机受损，气机不得通达，便形成了阴症。此时急需使用热性药物，根据经络进行温通治疗，使身体逐渐温热，让脏腑中的热气能够通达于肌肉间的经络。应当选用理中汤、四逆汤、真武汤等方剂，辨证施治。
还有一种阴症是直接侵入足少阴肾经的，多发生在房事之后感受寒邪，或因纵欲过多导致阳气虚弱，寒邪乘虚而入。症状表现为脐腹部绞痛，手足青紫，四肢厥冷，脉微细几乎摸不到。此时应紧急煎煮附子理中汤服用。外用一束葱白，大小如茶盏，扎紧后切取一指厚的一段，放置在肚脐上，用熨斗加热熨烫，使热气透入腹内，逼迫邪气外出，这样效果最佳。
真武汤：附子（臣药）、茯苓（臣药）、白芍（酒炒，佐药）、白术（君药）、生姜（使药）。
四逆汤：甘草（炙，臣药）、干姜（佐药）、附子（君药）。
病情严重的患者需使用重剂量的药物。
还有一种戴阳症，表现为两颧呈现浅红色，且红色游移不定。或者出现烦躁发狂，想要坐在泥水中；口渴想喝水，却又喝不下去；大便自行通畅或秘结；小便颜色清白或淡黄；咽喉有时疼痛，有时不痛；脉象沉迟而微细。虽然肌表感觉发热，但重按下去却不热，严重时甚至冷透手指。这是阴盛格阳（阴寒内盛，格拒阳气于外）的表现。又有面红烦躁，满舌生疮长刺，舌头收缩卷曲像荔枝核一样；或者痰涎涌盛，气喘急促，小便频数，口干想喝水，嘴唇焦裂，感觉喉间有烟火向上攻冲，两脚心像被烙铁烫过一样；脉象洪大且数乱无伦次，重按有力（也有重按微弱者），触摸身体感觉烫手。这是肾虚导致火不归经，正如《素问》所说的“脉象与病情相反”。这些情况都使用十全大补汤，配合吞服八味丸，或者使用大剂量的八味饮，合用生脉散。其中人参和熟地黄的用量可用到二两至三两，附子的用量可用到三钱至五钱。如果误认为是白虎汤证（阳明经实热证），病人会立即死亡。
There is a condition caused by excessive sexual indulgence, leading to loose and open couli (skin pores and interstitial spaces), allowing cold pathogenic factors to enter directly into the Three Yin meridians due to deficiency. This is called Yin Syndrome (Yin Zheng), an acute onset disease characterized by the absence of initial heat symptoms. The term "direct entry into Yin meridians" refers to the invasion of the Heart, Liver, Spleen, Lung, and Kidney meridians by severe cold qi. The cold penetrates from the collaterals between muscles directly into the zang organs. Whether affecting the Heart, Liver, Spleen, Lung, or Kidney, the vital energy is damaged and fails to circulate freely, resulting in Yin Syndrome. At this stage, it is urgent to use hot-natured herbs to unblock the meridians according to their pathways, gradually warming the body so that the warm qi within the zang organs can reach the collaterals between the muscles. One should select formulas such as Lizhong Tang (Regulate the Middle Decoction), Sini Tang (Reverse the Extremities Decoction), and Zhenwu Tang (True Warrior Decoction) for treatment based on syndrome differentiation.
Another type of Yin Syndrome involves direct invasion of the Foot-Shaoyin Kidney Meridian, often occurring after sexual activity followed by exposure to cold, or due to yang deficiency from excessive desire, allowing cold to enter via the deficiency. Symptoms include colicky pain in the umbilical and abdominal regions, cyanosis of the hands and feet, cold limbs (Jue Ni), and a faint pulse nearly imperceptible. In this emergency, decoct Fuzi Lizhong Tang and administer it externally. Take a bundle of scallion whites, roughly the size of a tea cup, bind it tightly, cut a segment one finger-thick, place it on the navel, and apply heat using a hot iron. It is ideal if the heat penetrates into the abdomen, forcing the pathogen out.
Zhenwu Tang: Fuzi (Aconiti Lateralis Radix Praeparata) [Minister herb], Fuling (Poria) [Minister herb], Baishao (Paeoniae Radix Alba, stir-fried with wine) [Assistant herb], Baizhu (Atractylodis Macrocephalae Rhizoma) [Monarch herb], Shengjiang (Zingiberis Rhizoma Recens) [Envoy herb].
Sini Tang: Gancao (Glycyrrhizae Radix et Rhizoma Praeparata cum Melle) [Minister herb], Ganjiang (Zingiberis Rhizoma) [Assistant herb], Fuzi (Aconiti Lateralis Radix Praeparata) [Monarch herb].
For severe cases, heavy doses should be used.
There is also Daiyang Syndrome (Floating Yang Syndrome), characterized by pale red discoloration on both cheeks, which is migratory and unstable. Patients may exhibit restlessness, mania, and a desire to sit in mud or water; they feel thirsty and want to drink but cannot swallow; stool may be spontaneous diarrhea or constipation; urine is clear-white or pale yellow; the throat may or may not hurt; the pulse is deep, slow, faint, and thin. Although the skin surface feels hot, deep pressure reveals no heat, and in severe cases, the cold penetrates through the hand. This is Yin Excess repelling Yang (Yin Sheng Ge Yang). Another presentation includes facial redness, restlessness, ulcers and prickles covering the tongue, tongue retraction resembling a lychee pit, profuse phlegm-saliva, panting urgency, frequent urination, dry mouth with desire to drink, cracked and scorched lips, a sensation of fire/smoke attacking upward from the throat, and burning sensations in the soles of the feet. The pulse is surging, rapid, and chaotic without order, feeling strong upon deep pressure (though sometimes weak upon deep pressure); the body feels scorching to the touch. This is Kidney Deficiency causing Fire to fail to return to its source, as described in the *Suwen* as "pulse contrary to the disease." All these conditions are treated with Shiquan Dabu Tang (Complete Great Tonifying Decoction), taken with Bawei Wan (Eight-Ingredient Pill), or large doses of Bawei Yin (Eight-Ingredient Decoction) combined with Shengmai San (Generate the Pulse Powder). The dosage of Renshen (Ginseng Radix) and Shudihuang (Rehmanniae Radix Praeparata) can be up to 2–3 liang, and Fuzi (Aconiti Lateralis Radix Praeparata) up to 3–5 qian. If mistaken for Baihu Tang (White Tiger Decoction) syndrome, death will ensue immediately.
Shiquan Dabu Tang: Huangqi (Astragali Radix, honey-fried), Rougui (Cinnamomi Cortex), Sijunzi Tang (Four Gentlemen Decoction), Siwu Tang (Four Substances Decoction).
Bawei Wan: Consists of Liuwei Dihuang Wan (Six-Ingredient Rehmannia Pill) plus Fuzi (Aconiti Lateralis Radix Praeparata) and Rougui (Cinnamomi Cortex).