心包起自天池间，乳后一寸腋下三，天泉曲腋下二寸，曲泽屈肘陷中央， 门去腕方五寸，间使腕后三寸
量，内关去腕止二寸，大陵掌后两筋间，劳宫屈中名指取，中指之末中冲良。
手心热，脉行于掌中也。臂肘挛急，腋肿，胸胁支满，皆脉所过之地也。 大动，心宜静而反动，本脏
病也。面赤目黄。手少阴经病，心包络脉所通也。喜笑不休，心在声为笑，本脏病也。脉所生病，心主脉也。
烦心心痛，本脏病也。掌中热，即手心热也。
以上经病多与心经相同，以经脉相近也。至于脏病，心经则无，而心包络则有，以心脏不可受邪，凡病皆
包络相火受之也。《内经》分心与心主为两经，本草言证治则合而为一。今遵《内经》，仍分为二，至本草所
载，则附于心主条下，以本病属于心主，标病两经略同，治法亦两经无异也。
心藏神，为君火。包络为相火，代君行令，主血，主言，主汗，主笑。
本病（心包之病）
诸热瞀 ，（心主火，火胜则目眩筋急。）惊惑谵妄，烦乱，（心藏神，心病则神乱。）啼笑骂詈，（与经
言喜笑不休略同。）怔忡，（即心火病。）健忘，（心藏
神。）自汗，（心主汗。）诸痛痒疮疡。（心主血，热伤血也。）
标病（经络之病）
肌热，（热在血分。）畏寒战栗，（热极似寒。）舌不能言，（心主言。）面赤目黄，心烦热，胸胁满，
痛引腰背肩胛肘臂。（同经。）
心包经起始于天池穴，位于乳头后方一寸、腋下三寸处；天泉穴在曲腋下方二寸；曲泽穴在屈肘时肘横纹的凹陷中央；郄门穴距离腕横纹上方五寸；间使穴在腕后三寸处测量定位；内关穴距离腕横纹仅二寸；大陵穴在两筋之间的掌后位置；劳宫穴通过屈曲中指与无名指取定；中冲穴位于中指的末端。
手心发热，是因为手厥阴心包经的脉气行于手掌之中。手臂和肘部拘挛紧急，腋下肿胀，胸胁部支撑胀满，这些都是经脉所经过部位出现的病症。脉搏跳动剧烈（大动），心脏本应安静却反而躁动，这是本脏发生的疾病。面色发红，眼睛发黄，属于手少阴心经的疾病，因为心包络脉与之相通。喜欢无故发笑不止，因为心在声音方面对应为笑，这是本脏发生的疾病。脉所生的疾病，是因为心主司血脉。心中烦闷、心痛，是本脏发生的疾病。掌中发热，就是手心发热。
以上经脉病变大多与心经相同，因为两条经脉位置相近。至于脏腑本身的病变，心经没有记载，而心包络却有记载，这是因为心脏不能直接受邪，凡是病邪都会由心包络中的相火来承受。《内经》将心和心主分为两条经脉，《本草》论述证治时则合为一谈。现在遵循《内经》，仍然将其分为两条经脉，至于《本草》中记载的内容，则附在心主条目之下，因为本脏的病属于心主，标病的两条经脉大致相同，治疗方法也没有两样。
心藏神，属于君火。心包络属于相火，代替君主行使命令，主管血液，主管言语，主管汗液，主管笑声。
本脏病（心包的疾病）：各种热病导致的昏蒙视物不清，（心主火，火气过盛则导致目眩、筋脉拘急。）惊恐疑惑、胡言乱语、心烦意乱，（心藏神，心病则神志混乱。）啼哭、大笑、骂人，（与经脉篇所说的喜欢笑不止大致相同。）心悸怔忡，（即心火病。）健忘，（心藏神。）自汗，（心主管汗液。）各种疼痛、瘙痒、疮疡。（心主血，热邪损伤血液所致。）
标病（经络的病变）：肌肉发热，（热邪在血分。）怕冷战栗，（热极似寒。）舌头僵硬不能说话，（心主管言语。）面色发红，眼睛发黄，心烦发热，胸胁胀满，疼痛牵引至腰背、肩胛、肘部和手臂。（同属经脉病变。）
The Pericardium Channel originates at Tianchi (PC1), located one cun posterior to the nipple and three cun below the axilla; Tianquan (PC2) is two cun below the axillary fold; Quze (PC3) is in the center of the depression at the cubital crease when the elbow is flexed; Ximen (PC4) is five cun proximal to the wrist crease; Jianshi (PC5) is measured three cun proximal to the wrist crease; Neiguan (PC6) is two cun proximal to the wrist crease; Daling (PC7) is between the two tendons at the posterior aspect of the palm; Laogong (PC8) is located by flexing the middle and ring fingers; Zhongchong (PC9) is at the tip of the middle finger.
Heat in the palm occurs because the Qi of the Hand-Jueyin Pericardium Channel travels through the palm. Spasm and stiffness of the arm and elbow, swelling of the axilla, and distension and fullness in the chest and hypochondrium are all conditions occurring in areas traversed by the channel. Excessive pulsation (Da Dong) indicates that the Heart, which should be quiet, is instead agitated; this is a disease of the Zang organ itself. Red face and yellow eyes indicate diseases of the Hand-Shaoyin Heart Channel, as the Pericardium Collateral connects with it. Uncontrollable laughter occurs because the Heart corresponds to laughter in vocalizations; this is a disease of the Zang organ itself. Diseases generated by the vessels occur because the Heart governs the blood vessels. Vexation, heart pain, and heat in the palms (palm heat) are diseases of the Zang organ itself.
The above channel diseases are mostly similar to those of the Heart Channel because the channels are anatomically close. Regarding Zang organ diseases, they are not recorded for the Heart Channel but are recorded for the Pericardium Collateral, because the Heart cannot directly receive pathogenic factors; any pathology is borne by the Minister Fire within the Pericardium Collateral. The *Neijing* divides the Heart and the Heart Master into two separate channels, while Materia Medica texts combine them for syndrome differentiation and treatment. Following the *Neijing*, we still distinguish them into two channels. Content from the Materia Medica is attached under the Heart Master section because the root diseases belong to the Heart Master, while the branch diseases of both channels are roughly identical, and their treatment methods are indistinguishable.
The Heart stores the Shen (Spirit) and belongs to Sovereign Fire. The Pericardium Collateral belongs to Minister Fire, acts on behalf of the Sovereign to execute commands, and governs Blood, Speech, Sweat, and Laughter.
Root Diseases (Diseases of the Pericardium): Various febrile diseases causing dizziness and blurred vision (Heart governs Fire; excessive Fire causes dizziness and tendon stiffness). Fright, confusion, delirium, and mental agitation (Heart stores Shen; Heart disease leads to Shen disorder). Crying, laughing, and cursing (similar to "uncontrollable laughter" mentioned in channel descriptions). Palpitations (i.e., Heart Fire disease). Amnesia (Heart stores Shen). Spontaneous sweating (Heart governs sweat). Various pains, itching, sores, and ulcers (Heart governs Blood; Heat damages Blood).
Branch Diseases (Channel Diseases): Muscle fever (Heat in the Blood level). Aversion to cold and shivering (Extreme Heat mimicking Cold). Inability to speak due to tongue stiffness (Heart governs Speech). Red face, yellow eyes, vexation, heat sensation, chest and hypochondriac fullness, and pain radiating to the lower back, shoulders, scapulae, elbows, and arms (Same as channel diseases).