Formula
Underpants Ash Powder
燒褌散shao kun san
1 source
1 herbs·from Shanghan Lun (Treatise on Cold Damage)
In the《Shanghan Lun》tradition, this formula is described for the "yin-transfer" (陰易) pattern after illness: heaviness of the body, shortness of breath, tension low in the abdomen, heat surging to the chest, a heavy head hard to lift, flickering in the eyes, and cramping of the knees and shins. A historical indication, not a modern diagnostic or treatment recommendation.
Source
传统主治（traditional context, not a modern clinical claim）：傷寒陰易之爲病，其人身體重，少氣，少腹裏急，或引陰中拘攣，熱上衝胸，頭重不欲舉，眼中生花，…
Shanghan Lun (Treatise on Cold Damage)《伤寒论》辨阴阳易差后劳复病脉证并治·燒褌散（证治条文·宋本392）
References
- Self-authored English rendering of the classical formula name (pinyin + sense translation); not a verbatim excerpt, no modern proprietary source.
Composition
- Kun dang (an undergarment crotch)近隱處，取燒作灰
Citations
- Shanghan Lun (Treatise on Cold Damage) · Zhang Zhongjing · 《伤寒论》辨阴阳易差后劳复病脉证并治·燒褌散（组成·宋本392）Cited from Shanghan Lun (Treatise on Cold Damage) for its composition.
- Shanghan Lun (Treatise on Cold Damage) · Zhang Zhongjing · 《伤寒论》辨阴阳易差后劳复病脉证并治·燒褌散（证治条文·宋本392）；hash 锚 carrier 逐字唯一片段（含方名/组成上下文）Cited from Shanghan Lun (Treatise on Cold Damage) for its traditional indications.
- Shanghan Lun (Treatise on Cold Damage) · Zhang Zhongjing · 《伤寒论》辨阴阳易差后劳复病脉证并治·燒褌散（煎服法·宋本392）Cited from Shanghan Lun (Treatise on Cold Damage) for its preparation & usage.