The article examines the application of Aristotelian logic in the medical epistemology of Ibn Sina (Avicenna, 980–1037). It analyzes the transformation of the syllogistic method into an instrument of clinical diagnosis as presented in “The Canon of Medicine” (“al-Qānūn fī al-ṭibb”). The study demonstrates that Ibn Sina developed an original system of medical knowledge based on rigorous logical procedures of verification, which anticipated modern approaches to evidence-based medicine. The research methodology includes textual analysis of Arabic sources, comparative analysis of logical and medical treatises, and reconstruction of the epistemological foundations of medieval Islamic medicine.  

Ibn Sina, medical logic, syllogism

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