腳氣鉤要

Jiǎoqì gōuyào 腳氣鉤要

The Critical Points of Beriberi by 今邨亮 (Imamura Ryō / Ryōan 了庵, 1814–1890)

About the work

A focused two-juǎn monograph on beriberi (kakke 脚気 / 腳氣) by the late-Edo Japanese kanpō 漢方 physician Imamura Ryōan, completed shortly before the postscript of Bunkyū 1 / 3rd month (March 1861) signed by Asada Sōhaku 淺田惟常 (識此). 卷上 (Zōnglùn, Yuányīn, Zhěnfǎ, Zhìfǎ, Wàiyīn, Nèiyīn, Bìngbìng, Zhēnjiǔ, Bèiàn) lays out the theoretical and clinical doctrine; 卷下 (Yàonéng 藥能, “On Drug Efficacy”) is a focused materia-medica section reviewing some sixty drugs from the Imamura-school kakke pharmacopoeia, anchored throughout in the Shānghán lùn / Jīnguì canon and the Qiānjīn / Wàitái monographic tradition. The work was written when Imamura was about forty-seven, at the peak of his clinical practice, and shortly before the great Meiji beriberi epidemic that would, fifteen years later, force the imperial founding of the Hakusaidō (cf. KR3eh054).

The work’s controlling thesis is that kakke is water poison (suǐdoku 水毒), a single endogenous toxic principle of essentially nutritional and constitutional origin, distinct from external fēng / hán / shǔ / shī — the disease is summer-onset, urban-prevalent, leisure-class-prevalent, and almost unknown among manual labourers and rural populations. Imamura accordingly rejects the older 孫思邈 Sūn Sīmiǎo and 王燾 Wáng Tāo and Sòng Shèngjì zǒnglù tradition of treating it as a 風毒 / 濕痹 disorder, and dismisses Shānghán-style sweating cures. The correct hermeneutic is to read kakke through Jīnguì’s zhīyǐn 支飲 and fēngshuǐ 風水 frameworks; the controlling diagnostic sign is the pulsation at the dànzhōng 膻中 between the breasts, which Imamura makes the principal prognostic indicator of imminent chōngxīn 衝心 (cardiac arrest). 卷上’s Yuányīn and Bìngbìng sub-sections develop this through a series of case-histories drawn from the author’s own clinical practice in Edo, Kyoto and Ōsaka; the principal therapeutic agents identified are the Mù fángjǐ tāng 木防己湯 of Jīnguì, Wúzhūyú tāng 吳茱萸湯, the Shízǎo tāng 十棗湯 (in extremis), Wáng Shízhōng yīfāng (= Bīngláng sǎn 檳榔散 / Jīmíng sǎn 雞鳴散), and Sòng-imperial-pharmacy mercury-sulfur preparations (Língshā dān 靈砂丹, Yǎngzhèng dān 養正丹) for chōngxīn emergencies.

Abstract

The author signs nowhere within the section transmitted in hxwd; identification depends entirely on Asada Sōhaku’s postscript: “My friend Imamura the Ryōan, with the learning of three generations and a precocious talent, deeply grieved that so many should die of this disease, has written this book to make it public…” (吾友了庵今村君。以三世之學穎飽之才。深憫世之死於斯病者夥。著書以公於世。). The “sān shì zhī xué” 三世之學 reference identifies him as Imamura Ryōan 今村了庵 (1814–1890; 諱 Imamura Tōshi 今村亮 / Hidetoshi, zì Yúfǔ 與甫, hào Ryōan 了庵), third-generation physician of the Imamura medical lineage of Edo, originally from Higo 肥後. The 邨 vs 村 orthographic variant in the catalog meta and the in-text Asada attribution is purely conventional. Imamura was a senior shogunal physician (okui 奧醫師) and a close associate of Asada Sōhaku; after the Meiji Restoration he served briefly on the imperial medical staff before retiring to private practice. His other works include Yī ji yán shǐ 醫事漫筆 and Kō chū i shi 攷註醫事啟源.

The 卷下 Yàonéng section deserves separate notice. Each drug entry takes its lexical anchoring exclusively from Shānghán lùn / Jīnguì prescriptions and from Sūn Sīmiǎo and Wáng Tāo; he polemically rejects post-Sòng běncǎo additions and especially the Korean (and via Korea, Tokugawa) cult of cultivated rénshēn. His 人參 entry observes that Korean farmers fertilize rénshēn with manure and over-process it, so that what reaches Edo merchant shops has lost the true bitter-then-sweet flavour profile that the Sūnshī method demands; he recommends substitution with kan ji (官蒔) Japanese-cultivated unprocessed ginseng, against the entire Shānghán-school tradition.

The work circulated widely in late-Tokugawa and Meiji kanpō circles and is the principal Edo-school predecessor of the Hakusaidō Kakke gairon of 1879; the Hakusaidō postscript by Asada Sōhaku names this work among the few late-Edo monographs that “come close to the right view” (其學淺薄。其書鄙俚。不足傳信). The medical-historical analysis of beriberi as suǐdoku — Imamura’s distinctive contribution — was largely absorbed into mainstream kanpō doctrine and remains influential.

Translations and research

• Alexander R. Bay, Beriberi in Modern Japan: The Making of a National Disease. Rochester, NY: University of Rochester Press, 2012 — explicitly treats Imamura’s Kakke kōyō as the most theoretically coherent of the late-Edo kakke monographs.
• Yamashita Seizō 山下政三, Kakke no rekishi: Bitamin hakken izen 脚気の歴史: ビタミン発見以前. Tokyo: Tokyo Daigaku Shuppan-kai, 1983 — extensive citation of Imamura’s suǐdoku doctrine in chapters 4 and 5.
• Hiroshi Kosoto 小曽戸洋, Kanpō no rekishi 漢方の歴史. Tokyo: Taishūkan, 1999, pp. 224–227 on Imamura Ryōan and the Asada-Imamura circle.
• No standalone European-language translation located.

Other points of interest

Kakke kōyō is one of the earliest sustained Japanese medical works to treat a clinical disease entity as a single causally-coherent nutritional / metabolic disorder rather than as a syncretic assemblage of external pathogenic factors. From a modern medical-historical perspective, Imamura’s suǐdoku turns out to be a phenomenologically accurate description of high-output cardiac failure in advanced wet beriberi, the cardiac component being precisely what his 膻中 dòngqì pulsation signs were tracking. The Língshā dān / Yǎngzhèng dān rescue prescriptions, full of mercury and lead, are however indefensible by modern criteria and likely killed as many patients as they saved.

Links

• Imamura Ryōan — Wikipedia (Japanese)
• KR3eh054 — the Hakusaidō Kakke gairon of 1879, the principal Meiji successor.
• Kanseki DB
• 腳氣鉤要 jicheng.tw