Dǒng Jí 董汲 (zì Jízhī 及之, fl. Yuánfēng / Yuányòu reigns, 1078–1094, 宋), Northern-Sòng physician of Dōngpíng 東平 (Shāndōng). His career details are not preserved in the standard sources; 錢乙 Qián Yǐ — the founder of Sòng pediatrics — wrote a preface to Dǒng’s Bānzhěn lùn 㿀疹論 (KR3e0023), which fixes Dǒng’s active period to the Yuánfēng / Yuányòu transition (1078–1094). Author of the Jiǎoqì zhìfǎ zǒngyào 腳氣治法總要 (KR3e0022) — the principal Sòng-period specialist treatise on the jiǎoqì 腳氣 (leg-qì / beriberi-related) syndrome — and of the Xiǎoér bānzhěn bèijí fānglùn 小兒㿀疹備急方論 (KR3e0023) on pediatric eruptive fevers. According to his own preface to the Jiǎoqì zhìfǎ zǒngyào, Dǒng himself once suffered severely from jiǎoqì, which led him to investigate its sources and master its treatment — the SKQS tíyào observes that this fits the proverbial “三折肱而為良醫” (one becomes a good physician through threefold-broken arm-bones, i.e., personal experience).