Dan (Erysipelas-like dermatosis) arising in the bone, presenting with cyanotic-black color, is called Yifang Huodan (Yifang Fire Erysipelas).
Dan arising on the arms, back, and anus is called Huodan (Fire Erysipelas).
Dan initially arising on the arm, appearing bright red or black, is called Guhuo Dan (Bone Fire Erysipelas).
Dan initially arising below the ilium, all appearing red, and capable of migrating, is called Lihuo Dan (Fierce Fire Erysipelas).
The manifestation of Huodan often resembles skin reddening from a burn attached to the body, gradually enlarging day by day; this is called Huodan (Fire Erysipelas).
Dan adhering to both arms, back, and knees is called Feihuo Dan (Flying Fire Erysipelas).
Dan arising on both arms and back, resembling the appearance after moxibustion or cauterization, is called Youhuo Dan (Wandering Fire Erysipelas).
Dan arising on both hypochondria, axillae, and Quepen (Supraclavicular Fossa, LI15) is called Yanghuo Dan (Calamity Fire Erysipelas).
Dan arising above the knees, starting from both thighs and extending to the umbilicus, invading the glans penis, is called Nizaohuo Dan (Urine Kiln Fire Erysipelas).
When Dan initially causes the flesh to turn black and suddenly swells and rises, it is called Fenghuo Dan (Wind Fire Erysipelas).
The manifestation of Baohuo Dan, carrying black spots, is called Baohuo Dan (Sudden Fire Erysipelas).
The manifestation of Liuhuo Dan: after one day and night of onset, sores form, sized like a jujube, with a bright red color; this is called Liuhuo Dan (Retained Fire Erysipelas).
Dan initially arising on the back, spreading over the whole body, forming sores within one day and night, is called Zhutian Huodan (Vermilion Field Fire Erysipelas).
Dan arising from the back is called Yuhuo Dan (Stagnant Fire Erysipelas).
Dan arising on both cheeks (text implies face/cheeks), turning red and black within less than one day, is called Shenhuo Dan (Divine Fire Erysipelas).
Dan arising in the inner aspect of both legs, with bright redness between the sacrum/coccyx area, flowing to the glans penis, causing red swelling and bleeding, is called Tianzao Huodan (Heavenly Kiln Fire Erysipelas).
Dan arising on both arms, rising red and swollen like a plum, is called Guihuo Dan (Ghost Fire Erysipelas).
Dan covering the entire body, resembling patterned fabric, protruding like fine millet grains, with cyanotic-black color, is called Shihuo Dan (Stone Fire Erysipelas).
Dan appearing red, spotted like plums, covering the back and abdomen completely, is called Yehuo Dan (Wild Fire Erysipelas).
Dan initially arising from the back, spreading over the body like fine patterns, is called Zhuyu Huodan (Cornel Fire Erysipelas).
When Dan initially arises, adhering to both axillae and Quepen (Supraclavicular Fossa, LI15), it is named Jiahuo Dan (Household Fire Erysipelas).
Dan arising from the dorsum of the foot, appearing bright red, is called Feizaohuo Dan (Abandoned Kiln Fire Erysipelas).
Dan feeling as if burning, located under the hypochondria, bright red, initially arising from the ilium and growing upward, accompanied by pain, is called Yinghuo Dan (Firefly Fire Erysipelas).
These describe cases where Dan presents with pure red color, which is caused by heat-toxin clashing with blood and qi.