Variability in the application of classical Ayurvedic theory in diagnostic reasoning among senior physicians: A qualitative study

Technical Summary: Variability in the Application of Classical Ayurvedic Theory in Diagnostic Reasoning among Senior Physicians

Problem Statement
Contemporary Ayurvedic education and clinical practice in India operate within a dual framework: classical theoretical constructs (e.g., Doṣa, Agni, Āma, Samprāpti) derived from texts composed millennia ago, and modern biomedical sciences. A growing body of literature attempts to reinterpret modern biomedical diseases through these classical constructs, often mapping them onto mechanistic biomedical explanations (e.g., correlating Āma with autoimmunity or Agni with cellular metabolism). However, there is a lack of empirical evidence regarding how consistently experienced physicians apply these classical theories in actual diagnostic reasoning. The study addresses the gap between the theoretical expectation of a unified Ayurvedic framework and the practical reality of how senior practitioners interpret and apply these concepts when faced with modern disease entities.

Methodology
The study employed a qualitative descriptive design utilizing in-depth, semi-structured interviews.

• Participants: Thirteen senior Ayurvedic physicians were recruited via purposive sampling with maximum variation. Selection criteria included recognized academic leadership, involvement in national policy, government honors, and substantial clinical experience. Participants represented all geographical zones of India.
• Data Collection: Physicians were presented with five structured clinical case scenarios adapted from biomedical literature: Rheumatoid Arthritis, Diabetes Mellitus, Crohn's Disease, Dengue Fever, and Hypertension. Each case included biomedical findings alongside selected Ayurvedic parameters. Interviews were audio-video recorded, transcribed verbatim, and translated into English where necessary.
• Analysis: Data were analyzed using the six-phase thematic analysis framework proposed by Braun and Clarke. Researchers utilized both inductive and deductive coding approaches using Taguette software, generating 649 initial codes which were organized into conceptual domains and higher-order themes.
• Ethical Considerations: The study received institutional ethics approval (BHU, Ref: Dean/2023/EC/6626). Informed consent was obtained for participation, recording, and anonymized data use.

Key Contributions and Results
The study reveals substantial heterogeneity in the application of classical Ayurvedic theory, challenging the notion of a uniform diagnostic framework among senior practitioners.

1. Diagnostic Divergence: Even when physicians agreed on the biomedical diagnosis, their Ayurvedic categorization varied significantly.

   • Rheumatoid Arthritis: Diagnosed variably as Āmavāta (digestive/toxic origin) or Vātarakta (blood/Vāta obstruction), with no consensus on the primary pathogenic axis.
   • Crohn's Disease: While all physicians converged on the Ayurvedic category of Grahaṇī, there was significant divergence in subtype classification (e.g., Pittādhika, Tridoṣaja, Sannipāta) and the alignment with modern labels (ranging from IBS to Ulcerative Colitis).
   • Dengue Fever: Framed either as a severe Viṣama Jwara (fever) with prognostic caution or as Adho-Raktapitta (bleeding disorder), depending on whether the physician emphasized systemic fever or hemorrhagic symptoms.
   • Hypertension: Lacked a direct Ayurvedic counterpart; physicians framed it as a psychosomatic condition (Pittaja Moha), a somatic disorder (Vātaja Śiraśūla), or rejected it as a non-Ayurvedic entity entirely.

2. Variability in Theoretical Constructs:

   • Āma (Undigested Toxin): Physicians offered conflicting explanations for the locus and nature of Āma. Some described it biochemically (acid-alkaline imbalance, citrulline substitution), others systemically (joint-localized), and some psychologically. Classical teachings locating Āma in the gut (Jaṭharāgni) were often superseded by tissue-level (Dhātvagni) or microbiome-based explanations.
   • Samprāpti (Pathogenesis): The application of Samprāpti ranged from explicit, detailed classical sequences to implicit, intuitive reasoning based on experience. Some physicians explicitly rejected Samprāpti as a conscious analytical tool in routine practice, viewing it as a "story" constructed by the physician rather than a fixed biological truth.
   • Integration of Biomedicine: Physicians frequently incorporated biomedical concepts (autoimmunity, microangiopathy, microbiome) into their reasoning. However, this integration was often pragmatic and heuristic rather than theoretically systematic. Biomedical mechanisms were mapped onto Ayurvedic terminology without consistent ontological alignment, sometimes creating conceptual dissonance (e.g., equating Āvaraṇa with specific hormonal pathologies without clear physiological correspondence).

3. Nature of Reasoning: Clinical practice appeared guided more by pragmatic, experience-based judgment than by a uniform theoretical framework. The variability extended beyond individualized treatment (a traditional strength of Ayurveda) to fundamental differences in disease categorization, causal explanation, and the interpretation of core concepts.

Significance and Claims
The paper claims that the observed variability is not merely a result of individual clinical style but reflects a structural issue in how classical Ayurvedic constructs are applied to modern disease entities.

• Epistemic Boundaries: The study suggests that the variability arises partly because classical Ayurvedic categories were historically developed as observation-based, descriptive frameworks for symptom patterns, whereas contemporary biomedical diagnosis operates at a level of mechanistic resolution (cellular, molecular) unavailable to classical scholars.
• Educational Implications: The authors argue that current curricula, which often encourage direct mapping of classical concepts to modern biological mechanisms (e.g., linking Doṣa to genetics or Agni to cellular metabolism), may generate ambiguity. They propose that Ayurvedic education should explicitly acknowledge the different levels of abstraction between the two systems.
• Future Direction: Rather than forcing immediate equivalence between the two systems, the paper suggests developing parallel, independent diagnostic frameworks for patient assessment. Systematic observation of these parallel frameworks could eventually identify areas of genuine convergence and divergence in a methodologically transparent manner.

The study concludes that clinical practice is currently guided by a hybrid of pragmatic judgment and theoretical constructs that are not uniformly applied, necessitating a clearer articulation of the scope and limits of classical theory in contemporary clinical settings.