从毛孔中流出一条血来。有似箭之射出。故名血箭。由心肺火盛。逼血从毛孔中出。治宜清心火。以除血
出之源。凉血地黄汤。加蒲黄。又宜泻肺火。以敛皮毛之气。使毛孔不渗泻。则血自止。泻白散。加生地蝉蜕
百合五倍子黄芩蒲黄杏仁白芨。心肺兼治。宜用生地黄散。
血出过多。昏愦不省人事者。与吐衄血脱气散无异。宜独参汤。加附片蒲黄。当归补血汤。十全大补汤。皆
可择用。
外治法。水调桃花散。敷血孔。则血止。或用京墨磨醋搽。或用锻石散干糁。花蕊石散糁。均效。
血痣初起。其形如痣。渐大如豆。触破时长流血水。此由肝经怒火。郁血凝聚而成。内服丹栀逍遥散。及凉
血地黄汤。
触破流血者。用花蕊石散糁之。血止后。用田螺散枯其本痣。另用生肌药收口。未触破。未流血者。古无治
法。吾拟用虻虫为末。姜醋调搽。郁金三棱磨醋搽。真琥珀擦热。每日数次。内服之药如上。
癣疥血点。血疙瘩。一切皮肉赤痒。名色不一。今统称之曰血瘙。皆由血为风火所扰。火甚则起点。起疙瘩。
风甚则生虫生痒。火甚赤痛者。凉血地黄汤。加荆芥蝉蜕红花杏仁治之。风甚作痒者。和血消风散治之。
知血瘙之病。则凡一切火游丹。漆疮风丹诸治法。总不外是。兼热者色白。或流黄水。照上二方。加苍术赤
苓。兼寒者。或青黯硬肿。加桂尖。
外用银花陈艾川椒食盐煎水洗。另搽大枫丹。油调最妙。
血液从毛孔中流出，射出的样子像箭一样，因此称为“血箭”。这是由于心肺火气过盛，逼迫血液从毛孔中溢出。治疗应当清泻心火，以消除出血的根源；同时宜清泻肺火，以收敛皮毛之气，使毛孔不再渗漏，血液自然停止。可选用凉血地黄汤，加入蒲黄。另外也可使用泻白散，加入生地黄、蝉蜕、百合、五倍子、黄芩、蒲黄、杏仁和白芨，以此兼顾心肺进行治疗，适宜使用生地黄散。
如果出血过多，导致神志昏沉、不省人事的情况，与吐血、衄血导致的血脱气散证没有区别。适宜服用独参汤，加入附片、蒲黄；或者选用当归补血汤、十全大补汤，均可酌情使用。
外治法方面，用水调匀桃花散敷在出血孔上，即可止血。或者用京墨磨醋涂抹，或者用煅石散干撒，或者用花蕊石散撒布，都有疗效。
血痣初起时，形状像普通的痣，逐渐增大如豆粒大小，触碰破溃时会长时间流出血水。这是由肝经怒火郁结，导致血液凝聚而成。内服丹栀逍遥散及凉血地黄汤。
如果触碰破溃流血，用花蕊石散撒布患处。血止后，用田螺散枯死其根部痣体，另用生肌药物收口。对于未触碰破溃、未流血的血痣，古代没有治疗方法，我拟定用虻虫研成粉末，用姜汁和醋调和涂抹；或者用郁金、三棱磨醋涂抹；或者用真琥珀擦热后每日数次擦拭。内服药方同上。
癣疥中的血点、血疙瘩，以及一切皮肉发红发痒的症状，名称颜色各不相同，现在统称为“血瘙”。这都是因为血液受到风火的干扰所致。火邪严重时会出现红点、起疙瘩；风邪严重时会产生虫感、发痒。火邪严重且红肿疼痛的，用凉血地黄汤，加入荆芥、蝉蜕、红花、杏仁治疗。风邪严重且瘙痒的，用和血消风散治疗。
了解了血瘙的病机，那么凡是治疗火游丹、漆疮、风丹等病症的方法，总离不开上述原则。兼有热证的，颜色发白或流黄水，参照上述两个方剂，加入苍术、赤茯苓。兼有寒证的，颜色青暗或硬肿，加入桂尖（肉桂尖端）。
A stream of blood flows from the hair follicles, shooting out like an arrow; hence it is named "Blood Arrow" (Xue Jian). This condition arises from excessive fire in the Heart and Lung organs, forcing blood to exit through the pores. Treatment should focus on clearing Heart Fire to eliminate the source of bleeding, and purging Lung Fire to consolidate the Qi of the skin and hair follicles, preventing leakage so that bleeding stops naturally. The recommended formula is Liang Xue Di Huang Tang (Cooling Blood Rehmannia Decoction) with added Puhuang (Corydalis Rhizome Powder). Alternatively, one may purge Lung Fire using Xie Bai San (Draining White Powder) supplemented with Shengdi Huang (Rehmanniae Radix), Chan Tui (Cicadae Periostracum), Bai He (Lilii Bulbus), Wu Bei Zi (Galla Chinensis), Huang Qin (Scutellariae Radix), Puhuang (Corydalis Rhizome Powder), Xing Ren (Armeniacae Semen Amarum), and Bai Ji (Bletillae Rhizoma). To treat both Heart and Lung simultaneously, Sheng Di Huang San (Raw Rehmannia Powder) is suitable.
If excessive bleeding leads to stupor and loss of consciousness, it is identical to the syndrome of Qi and Blood collapse seen in hematemesis or epistaxis. Dandu Tang (Single Ginseng Decoction) with Fupian (Prepared Aconiti Lateralis Radix) and Puhuang (Corydalis Rhizome Powder) is indicated. Dang Gui Bu Xue Tang (Angelica Sinensis Tonifying Blood Decoction) and Shiquan Dabu Tang (Complete Ten Great Tonification Decoction) are also appropriate options.
For external treatment, apply Taohua San (Peach Blossom Powder) mixed with water to the bleeding pores to stop hemorrhage. Alternatively, apply vinegar-ground Jingmo (Beijing Ink) or sprinkle dry Duanshi San (Calcined Stone Powder) or Huaruishi San (Flower Stalactite Powder); all are effective.
Blood Nevus (Xue Zhi) initially appears as a mole-like spot, gradually enlarging to the size of a bean. If ruptured, it bleeds and oozes fluid for a long time. This is caused by Liver Fire stagnation leading to blood coagulation. Internal treatment involves Danzhi Xiaoyao San (Moutan and Gardenia Free and Easy Wanderer Powder) and Liang Xue Di Huang Tang (Cooling Blood Rehmannia Decoction).
If ruptured and bleeding, apply Huaruishi San (Flower Stalactite Powder). After bleeding stops, use Tianluo San (Snail Powder) to cauterize the root of the nevus, and apply other flesh-regenerating medicines to close the wound. For unruptured nevi without bleeding, there were no ancient treatments. I propose using Mengchong (Tachina Larva) powder mixed with ginger juice and vinegar for topical application; or applying vinegar-grind mixtures of Yujin (Curcumae Radix) and Sanleng (Sparganii Rhizoma); or rubbing heated real Hupo (Amber) several times daily. Internal medications remain as above.
Blood spots and nodules within tinea and scabies, along with all forms of red and itchy skin lesions, vary in name and color but are collectively termed "Blood Itch" (Xue Sao). These result from blood being disturbed by Wind and Fire. Excessive Fire causes red spots and nodules; excessive Wind causes parasitic sensations and itching. For severe Fire presenting with redness and pain, treat with Liang Xue Di Huang Tang (Cooling Blood Rehmannia Decoction) plus Jingjie (Schizonepetae Herba), Chan Tui (Cicadae Periostracum), Honghua (Carthami Flos), and Xing Ren (Armeniacae Semen Amarum). For severe Wind causing itching, treat with He Xiao Feng San (Harmonizing Blood Eliminating Wind Powder).
Understanding the pathology of Blood Itch reveals that treatments for conditions such as Fire Roaming Redness (Huo You Dan), Lacquer Dermatitis (Qi Chuang), and Wind Urticaria (Feng Dan) generally follow these principles. Cases with concurrent Heat present with white discoloration or yellow exudate; refer to the aforementioned formulas and add Cang Zhu (Atractylodis Rhizoma) and Chi Ling Shen (Polyporus with Red Host). Cases with concurrent Cold present with cyanotic, dark, hard, or swollen appearances; add Guijian (Cinnamomi Ramulus Tip).
Externally, wash with a decoction of Yinhua (Lonicerae Japonicae Flos), Chen Ai (Aged Mugwort), Chuanjiao (Zanthoxyli Pericarpium), and Shiyan (Sodium Chloride). Additionally, apply Dafeng Dan (Large Maple Elixir), ideally prepared with oil.