吐血之后，脏腑虚竭，荣卫不理，阴阳隔绝，阳虚于上，故身体虚热，胸中痞，则口燥
夫心者，主血；肝者，藏血。愁忧思虑则伤心，恚怒气逆，上而不下则伤肝。肝心二脏
伤，故血流散不止，气逆则呕而出血。
唾血者，由伤损肺所为。肺者，为五脏上盖，易为伤损，若为热气所加，则唾血。唾上
如红缕者，此伤肺也；胁下痛，唾鲜血者，此伤肝。
关上脉微芤，则唾血。脉沉弱者生，牢实者死。其汤熨针石，别有正方，补养宣导，今
附于后。
《养生方·导引法》云∶伸两脚，两手指着足五指上，愈腰折不能低着。若唾血，久疼
长伸两脚，以两手捉足五指七遍。愈腰折不能低仰，若唾血、久疼、血病。久行，身则可卷转也。
此由五脏伤损所为。脏气既伤，则风邪易入，热气在内，亦大便下血，鲜而腹痛。冷气
在内，亦大便血下，其色如小豆汁，出时疼而不甚痛。
前便后下血者，血来远；前下血后便者，血来近。远近者，言病在上焦、下焦也。令人
面无血色，时寒时热。
脉浮弱，按之绝者，下血。
心主于血，与小肠合。若心家有热，结于小肠，故小便血也。
下部脉急而弦者，风邪入于少阴，则尿血。尺脉微而芤，亦尿血。
《养生方》云∶人食甜酪，勿食大酢，必变为尿血。
吐血之后，脏腑功能虚弱枯竭，营卫之气运行失调，阴阳之气隔绝不通。阳气虚衰于上部，因此身体出现虚热，胸中痞塞不适，导致口燥。
心主司血液；肝主贮藏血液。忧愁思虑会损伤心脏，愤怒气逆，气机上冲而不能下行则会损伤肝脏。肝、心两脏受损，所以血液流散不止，气机逆乱则呕吐出血。
唾血（口中吐出带血的唾液），是由于肺脏受到损伤所致。肺位于五脏之上，如同盖子一样，容易受到损伤，如果受到热气侵袭，就会导致唾血。唾出的血像红色的丝线一样，这是肺脏受伤的表现；胁肋下疼痛，唾出鲜红的血，这是肝脏受伤的表现。
脉象在关部呈现微而芤（中空如葱管）的特征，就会出现唾血。脉象沉弱表示生机尚存可治，脉象牢实（坚牢有力）则表示预后不良属死证。关于汤药外熨、针刺砭石的治疗方法，另有专门的方剂，补益调养和导引宣通的方法，现在附在后面。
《养生方·导引法》说：伸直双腿，双手手指触碰双脚的五个脚趾，可以治愈腰部折断不能弯腰的症状。如果是唾血、长期疼痛，可以长久伸直双腿，用双手握住脚的五趾七次。可以治愈腰部折断不能弯腰仰身，以及唾血、长期疼痛、血病等症状。经常练习行走，身体就可以变得灵活卷转。
心主司血脉，其状况反映在舌头上。如果心脏有热邪，舌头就会出血，状如涌泉。
这种情况是由五脏损伤引起的。脏气既然已经受伤，风邪就容易侵入，热气蕴结在体内，也会导致大便下血，血色鲜红且伴有腹痛。如果冷气蕴结在体内，也会导致大便下血，血色像小豆汁一样，排出时疼痛但不剧烈。
先排便后出血的，说明出血部位较远；先出血后排便的，说明出血部位较近。“远近”是指病变在上焦还是下焦。这会导致人面色苍白无血色，时而发冷时而发热。
脉象浮弱，重按感觉不到脉搏跳动的，是下血证。
心主司血液，与小肠相表里配合。如果心家（心脏）有热邪，郁结在小肠，就会导致小便出血。
下部脉象急而弦的，是风邪侵入少阴经，就会导致尿血。尺部脉象微而芤的，也会尿血。
《养生方》说：人吃了甜奶酪后，不要食用大醋，否则一定会变成尿血。
After hematemesis (vomiting blood), the zang-fu organs are depleted and weak, the Ying and Wei (nutritive and defensive) qi fail to regulate properly, and yin and yang become severed. Yang deficiency in the upper jiao results in a sensation of deficient heat in the body, chest fullness and obstruction (chest痞), and dryness of the mouth.
The Heart governs blood; the Liver stores blood. Sorrow, worry, and overthinking damage the Heart; anger with counterflowing qi that rises but does not descend damages the Liver. When both the Liver and Heart are damaged, blood flows and scatters without stopping, and qi counterflows, leading to vomiting and bleeding.
Hemoptysis (spitting blood) is caused by injury to the Lung. The Lung acts as the canopy for the five zang organs and is easily injured; if subjected to pathogenic heat, it causes spitting of blood. If the sputum contains blood threads resembling red silk, this indicates lung injury; if accompanied by pain in the hypochondrium and spitting of fresh bright red blood, this indicates liver injury.
A pulse that is faint and cun-kou (cun position at the guan section) suggests hemoptysis. A deep and weak pulse indicates survival/prognosis is good, whereas a firm and solid pulse indicates death/poor prognosis. Regarding treatments involving decoctions, external warming (tang-wen), acupuncture, and stone therapy, there are separate specific formulas. Methods for tonification, nourishment, and guidance/exercise are attached hereafter.
The "Yangsheng Fang · Daoyin Method" states: Extend both legs, and use both hands' fingers to touch the five toes of the feet; this can cure conditions where the waist is broken/injured and cannot bend forward. For hemoptysis or chronic pain, extend both legs for a long time, and grasp the five toes of the feet with both hands seven times. This can cure inability to bend or extend the waist due to injury, as well as hemoptysis, chronic pain, and blood disorders. Frequent walking allows the body to become flexible and rollable.
The Heart governs the vessels and manifests in the tongue. If there is heat in the Heart, blood will bleed from the tongue like a gushing spring.
This condition is caused by damage to the five zang organs. Once the organ qi is injured, wind pathogens easily enter, and internal heat may also cause blood to pass down through the stool, which is bright red and accompanied by abdominal pain. If cold qi accumulates internally, it also causes blood to pass down through the stool, with a color resembling mung bean juice, and pain upon discharge that is not severe.
Bleeding after defecation indicates the source of bleeding is distant; bleeding before defecation indicates the source is near. "Distant" and "near" refer to pathology in the Upper Jiao or Lower Jiao respectively. This causes the face to lose its ruddy color, with alternating chills and fever.
A floating and weak pulse that disappears upon heavy pressure indicates lower bleeding (hematochezia).
The Heart governs blood and harmonizes with the Small Intestine. If heat accumulates in the Heart and binds to the Small Intestine, it causes hematuria (blood in urine).
A rapid and wiry pulse in the lower positions indicates wind pathogens entering the Shaoyin channel, leading to hematuria. A faint and cun-kou pulse at the Chi position also indicates hematuria.
The "Yangsheng Fang" states: After consuming sweet cheese/yogurt, one should not consume strong vinegar, otherwise it will inevitably transform into hematuria.