Lù Zǐxián 陸子賢 (= Lù Tíngzhēn 陸廷珍, zì Zǐxián 子賢, also written 陸延珍, 清). Mid-Qīng physician of Chóngmíng 崇明 (modern Shànghǎi). Active in the Dàoguāng through Tóngzhì eras; date of birth and death not preserved in standard sources, but clinical activity is documented “across several decades” by Tóngzhì 7 (1868), the year of his major work.
Author of the Liùyīn tiáobiàn 六因條辨 (KR3eg017) in 3 juǎn, completed Tóngzhì 7 (1868). The book organises the externally-contracted disorders by the six pathogenic factors (liùyīn 六因 = wind, cold, summer-heat, damp, dryness, fire), in 12 doctrinal essays and 171 condition-prescription propositions (zhèngfāng tiáobiàn 證方條辨). Each proposition carries an explanatory note 釋文. The work is most distinctive for its integrative Shānghán / wēnbìng approach: Lù declines to draw the sharp doctrinal line that Wú Jūtōng and the southern wēnbìng school had established, instead arguing for a hánwēn rónghé lùn 寒溫融合論 (cold-warm integration theory) in the treatment of externally-contracted disease.
Lù was preserved in Zhēnběn yīshū jíchéng 珍本醫書集成; surviving editions include the Guāngxù 32 (1906) blockprint, the 1937 Wénguāng Shūjú typeset, and modern editions. The book was reprinted multiple times in the late Qīng and 20th century.
Native place documented as Chóngmíng (then a county of Sūzhōu prefecture; modern Shànghǎi). Source: book prefaces; Zhōng yī rén wù cí diǎn 中醫人物詞典 (Shanghai cishu, 1988).