人身有二火，一曰君火，犹人火也，二曰相火，犹龙火也。小儿平素有火，加以寒郁，而热成矣。若脏气素
阴，则寒虽入而热不生。在初惟见无热恶寒，至夜方见热作。且有平素无热，因于火虚而热上浮，其症有似于热。
又或中有食滞，上下气不通泄，而身时见热作，皆非真正纯热之谓。故治热须分表里阴阳，及有积热、伏热、热
毒、假热之异也。火与热有连带关系，本草治火之药，多属治热之药，故以热并于火，但举热病而火在其中矣。
小儿四肢满闷，便难转筋，多怒多惊，筋痿不能起床，按其肌肉之下至骨之上有热，寅卯间尤甚，此肝热也。
古法主柴胡饮（如柴胡、黄芩、人参、当归、赤芍、大黄、甘草各等分），水煎服。
〔真按〕泻肝之热，但用石决明三钱，车前子一钱，淡竹叶钱半，生草梢三分，引用生白芍磨汁冲药服。
小儿心烦，掌中热，而腕微按其皮肤之下，肌肉之上，轻手
乃得，重按之则全不热，日中为甚，此热在血脉，即心热也。古法主黄连泻心汤（如黄连一味）煎汤服。
〔真按〕泻心之热，单用黄连，苦寒碍胃，但用麦冬去心一钱，淡竹叶一钱，生甘草梢三分，引用灯芯
三十寸，煎服即退。
小儿怠惰嗜卧，四肢不收，无气以动，轻手扪之不热，重按至筋骨亦不热，不轻不重，在轻手重手之间，
过夜尤甚，此热在肌肉，即脾热也。古法实热则主调胃承气汤（如大黄、芒硝、甘草三味），虚热则主补中益
气汤（如人参、黄 、白术、升麻等十味）。
〔真按〕泻脾之热，实者只用生黄芩一钱，生白芍一钱，生甘草梢五分；虚者只用鲜竹茹钱半，生白芍一
钱，云茯苓钱半，白通草三分，为剂。
人身中有两种火，一种称为君火，如同人的正常之火；另一种称为相火，如同龙火。小儿平时体内就有火气，如果再受到寒邪郁闭，就会形成热证。如果脏腑之气素来偏阴，那么即使寒邪侵入也不会产生热证。在疾病初期，只表现为没有发热但怕冷，直到夜间才出现发热。还有平时没有热象，因为火气虚弱导致热气上浮，其症状看起来像是有热。又或者中间有食物停滞，上下气机不通畅无法排泄，从而身体时常出现发热，这些都不是真正的纯热证。所以治疗热证必须区分表里、阴阳，以及辨别是否有积热、伏热、热毒、假热的不同。火与热有着连带关系，本草中治疗火的药物，大多属于治疗热的药物，因此将热归并于火，只要列举热病，火就在其中了。
小儿四肢胀满闷塞，大便困难且容易抽筋，容易发怒和受惊，筋脉萎软不能起床，按压肌肉之下、骨头之上的部位感觉发热，在寅时到卯时（凌晨3点到7点）尤其严重，这是肝热。古法主要使用柴胡饮（如柴胡、黄芩、人参、当归、赤芍、大黄、甘草各等分），用水煎服。
〔陈守真按〕泻除肝热，只需使用石决明三钱，车前子一钱，淡竹叶一钱半，生甘草梢三分，引用生白芍磨成的汁液冲服药渣服用。
小儿心烦意乱，手掌心发热，手腕处轻微按压皮肤之下、肌肉之上，轻手按压才能感觉到热度，重按则完全不热，中午时分最为严重，这是热在血脉，即心热。古法主要使用黄连泻心汤（如仅用黄连一味药）煎汤服用。
〔陈守真按〕泻除心热，单用黄连，因其苦寒容易损伤胃气，只需使用麦冬去心一钱，淡竹叶一钱，生甘草梢三分，引用灯芯草三十寸，煎服即可退热。
小儿倦怠懒惰喜欢躺卧，四肢无力收持，没有力气活动，轻手抚摸不热，重按至筋骨也不热，不轻不重，在轻手重手之间感到发热，过夜后尤为严重，这是热在肌肉，即脾热。古法对于实热主要使用调胃承气汤（如大黄、芒硝、甘草三味药），对于虚热主要使用补中益气汤（如人参、黄芪、白术、升麻等十味药）。
〔陈守真按〕泻除脾热，实证只用生黄芩一钱，生白芍一钱，生甘草梢五分；虚证只用鲜竹茹一钱半，生白芍一钱，云茯苓一钱半，白通草三分，作为药剂。
There are two types of fire in the human body: one is called Junhu (Monarch Fire, 君火), which is like normal human fire; the other is called Xianghu (Ministerial Fire, 相火), which is like dragon fire. Children usually have fire within their bodies; if this is compounded by cold stagnation, heat conditions arise. If the Zang-fu Qi is inherently Yin-predominant, then even if cold pathogens enter, heat will not be generated. In the early stage, only aversion to cold without fever is seen, with fever appearing only at night. Additionally, there are cases where there is no prior heat, but due to deficiency of fire, heat floats upward, presenting symptoms that resemble heat. Or, there may be food retention in the middle jiao, causing obstruction of Qi flow and inability to excrete, leading to intermittent fever. None of these constitute pure true heat. Therefore, treating heat requires distinguishing between exterior and interior, Yin and Yang, as well as differentiating among accumulated heat, latent heat, heat toxicity, and false heat. Fire and heat are closely related; herbs in Materia Medica used to treat fire mostly treat heat. Thus, heat is subsumed under fire, so discussing heat diseases inherently includes fire.
When a child presents with fullness and stuffiness in the four limbs, difficulty in defecation, convulsions, irritability, fright, flaccidity of sinews preventing them from getting out of bed, and heat felt upon palpation below the muscle and above the bone, especially severe during the Yin-Mao hours (3:00-7:00 AM), this is Liver Heat. The ancient method primarily prescribes Chaihu Yin (Bupleurum Decoction, e.g., equal parts of Chaihu [Bupleuri Radix], Huangqin [Scutellariae Radix], Renshen [Ginseng Radix], Danggui [Angelicae Sinensis Radix], Chi Shao [Paeoniae Radix Rubra], Dahuang [Rhei Radix et Rhizoma], and Gancao [Glycyrrhizae Radix et Rhizoma]), decocted in water and taken orally.
[Chen Shouzhen's Note:] To drain Liver heat, use only Shijueming (Haliotidis Concha) 3 qian, Cheqianzi (Plantaginis Semen) 1 qian, Dan Zhuyeqie (Lophatheri Herba) 1.5 qian, and Sheng Caoshao (raw end of Glycyrrhizae Radix et Rhizoma) 3 fen. Use juice ground from raw Baishao (Paeoniae Radix Alba) as a guide to take the medicine.
When a child suffers from mental restlessness, heat in the palms, and heat in the wrist area that is detectable only with light pressure on the skin below the muscle, but disappears completely with heavy pressure, peaking at noon, this indicates heat in the blood vessels, i.e., Heart Heat. The ancient method primarily prescribes Huanglian Xiexin Tang (Coptis Decoction to Drain the Heart, e.g., consisting solely of Huanglian [Coptidis Rhizoma]) decocted in water and taken orally.
[Chen Shouzhen's Note:] To drain Heart heat, using Huanglian alone is too bitter and cold, potentially damaging the Stomach Qi. Instead, use Maidong (Ophiopogonis Radix, heart removed) 1 qian, Dan Zhuyeqie (Lophatheri Herba) 1 qian, and Sheng Caoshao (raw end of Glycyrrhizae Radix et Rhizoma) 3 fen. Use Dengxin (Junci Medulla) 30 cun as a guide, decoct and take orally to reduce fever.
When a child is lethargic, prefers lying down, has weak limbs unable to support themselves, lacks energy to move, feels no heat with light palpation, no heat with heavy palpation down to the bones, but feels heat with moderate pressure (between light and heavy), worsening overnight, this indicates heat in the muscles, i.e., Spleen Heat. For excess heat, the ancient method primarily prescribes Tiaowei Chengqi Tang (Regulate the Stomach and Purge the Bowels Decoction, e.g., containing Dahuang [Rhei Radix et Rhizoma], Mangxiao [Natrii Sulfas], and Gancao [Glycyrrhizae Radix et Rhizoma]); for deficiency heat, it primarily prescribes Buzhong Yiqi Tang (Decoction to Supplement the Middle and Augment the Qi, e.g., containing Renshen [Ginseng Radix], Huangqi [Astragali Radix], Baizhu [Atractylodis Macrocephalae Rhizoma], Shengma [Cimicifugae Rhizoma], etc., ten ingredients).
[Chen Shouzhen's Note:] To drain Spleen heat: for excess patterns, use only Sheng Huangqin (raw Scutellariae Radix) 1 qian, Sheng Baishao (raw Paeoniae Radix Alba) 1 qian, and Sheng Caoshao (raw end of Glycyrrhizae Radix et Rhizoma) 5 fen; for deficiency patterns, use only Xian Zhuru (fresh Bamboo Sap/Dendrocalamus Old Shoots) 1.5 qian, Sheng Baishao (raw Paeoniae Radix Alba) 1 qian, Yun Fuling (Poria Cocos with pine wood) 1.5 qian, and Bai Tongcao (Tetrapanacis Medulla) 3 fen, formulated as a dosage.