# Samprapti (the Ayurvedic model of pathogenesis)

> Canonical version of this page: https://nighantu.ageayurveda.com/concept/samprapti/

## How much weight this concept bears

Samprapti rests on classical exegesis. This revision separates what is addressable in text from what is evidentially supported, because running those together was the gathered record's central defect.

WHAT IS ADDRESSABLE IN TEXT. Charaka's Nidana Sthana 1 defines samprapti by synonym (Ni. 1/11), divides it by five analytic heads (Ni. 1/12), and defines each of the five (Ni. 1/12.1 to 12.5). All of it is quotable from Kaviratna's public-domain translation and all of it is now numbered against the Trikamji Sanskrit rather than against a translator's own count or an unnamed 'modern edition'. The definitional run is the closest thing in the samhita to an operational definition, and it is worth being exact about what it operationalises: how to subdivide a pathogenesis once stated, not how to establish one, not how to choose between two, and not how to find one wrong. Charaka also gives a worked example in the fever chapter and the site-specificity principle at Su. 28/8 that the whole construct rests on.

WHAT THIS RECORD NO LONGER CLAIMS. The gathered evidenceState called samprapti 'a well-attested doctrinal construct with clear textual loci in Charaka's Nidana Sthana and a long commentarial and teaching tradition'. The second half is cut. A teaching tradition is the replication of a syllabus; it is transmission, not corroboration, and a construct taught for a thousand years is not thereby better evidenced than one taught for ten. The cut also removes a conflation that the gathered record's own contested[1] already refuted. Calling the loci 'clear' is true of Charaka's five analytic heads and false of samprapti ghataka, the ten-to-twelve-item checklist that modern clinical writing actually operates under the name samprapti; the searches named in gatheringNotes found no classical verse enumerating that list, and no retrieved source gives it an author or a date. Describing both as one well-attested construct let a twentieth-century teaching artefact inherit Charaka's authority. The two are now reported as two things, in summary, in components and in contested[1]. Nothing was deleted to make the old claim survivable: the contested entry that exposed it stands untouched and has been strengthened.

WHAT THE MODERN LITERATURE SUPPORTS. A PubMed search for 'samprapti' on 2026-10-06 returned 15 records. Those retrieved and read for this record are case reports, case series and narrative reviews that restate a classical pathogenesis for a modern disease label (psoriasis, blistering skin disease, uterine fibroid, infertility, migraine, hypertension, cancer), assert a correspondence, and stop; several close by proposing biomarker work as future research. Two studies bear empirically on the construct and both run against it. A 2024 emailed vignette survey of 141 experienced practitioners found a significant lack of consensus on diagnosis, on pathophysiology and on treatment across five scenarios, and concluded that these constructs do not uniformly determine prescriptions or individualisation (PMID 39183608). A 2019 reliability study nested in an RCT found chance-corrected agreement between four Ayurvedic experts of kappa 0 to 0.4 on core components including prakriti and agni, despite 95 percent agreement on the consented final diagnosis (PMID 30653338).

THE ATTEMPTS TO OPERATIONALISE IT, NAMED RATHER THAN DISMISSED. The gathered record's verdict of 'no validated operational definition' passed over the efforts that tried to build one, which is not an honest way to report a null. The named efforts, as far as these searches reach: AyuSoft, the C-DAC Pune decision-support software, whose prakriti module was measured against two independent physicians at ICC 0.72 for vata, 0.58 for pitta and 0.44 for kapha (PMID 33750638); the wider body of prakriti assessment tools, audited in a 2025 scoping review of 32 studies that found 3 of 16 questionnaires both reliable and valid, 3 of 5 algorithmic methods using validated machine-learning models, and 1 of 11 devices validated with reproducible data, and that names 'finding the ground truth in a robust manner' as the standing obstacle (PMID 40582042); and Ayurvedic health informatics generally, including 'development of Traditional Medicine databases for decision system support' (PMID 26160148). Two things must be said about this list, and the second is the more important. First, every one of these operationalises a samprapti INPUT, chiefly prakriti, and none of them encodes samprapti or samprapti ghataka; the searches run for this record, which are logged in gatheringNotes, returned no indexed study evaluating a computational encoding of samprapti itself, and 'AyuSoft' returns 7 records of which all 7 concern prakriti. Second, the audits of the inputs are themselves unfavourable, and the 2025 review's ground-truth problem is the one that bites hardest: a tool can only be validated against a reference standard, and for these constructs the reference standard is expert judgement of the kind measured at kappa 0 to 0.4.

WHAT FOLLOWS. A reader should treat samprapti as a structured clinical narrative and a teaching framework. Its reproducibility has been tested indirectly, through the components a samprapti is assembled from, and the results were poor; whether a samprapti statement itself is reproducible between two clinicians was not addressed by any study these searches found. It is not a validated pathophysiological model. This record does not assert that no validation exists anywhere, only that the searches it names did not find one, and notKnown states the bound on each of those searches.

Samprapti is the Ayurvedic term for the account of how a disease came about. This record keeps apart three objects that the word is used for, because the gathered version ran them together and that conflation was its central defect.

(1) Charaka's samprapti. Nidana Sthana 1 treats it as one of five things from which a disease is ascertained, alongside cause, premonitory signs, manifest signs and response to a trial of contrary measures (Ni. 1/6). It gives jati, birth, and agati, coming-on, as words of the same import (Ni. 1/11). It divides samprapti by five analytic heads (Ni. 1/12) and then defines each of the five in the lines that follow (Ni. 1/12.1 to 12.5): sankhya, number, as in eight kinds of fever; pradhanya, which dosha is the stronger or the strongest; vidhi, class, by two, three or four kinds; vikalpa, the measure in which doshas standing in combination have been excited; and balakala, strength-and-time, read off season, day, night and the hours of eating. That definitional run is the closest thing in the samhita to an operational definition of samprapti, and what it operationalises is how to subdivide a pathogenesis once stated, not how to establish one.

(2) The worked narrative. Charaka's fever chapter runs one such sequence end to end: excited vata enters the stomach, mingles with the heat of the digestive fire, overtakes the food-juice, obstructs the ducts bearing food-juice and sweat, displaces the digestive fire so that its heat spreads through the body, and fever is generated. Later samprapti narratives follow this shape.

(3) Samprapti ghataka and samprapti vighatana. Modern Ayurvedic teaching breaks samprapti into a checklist of ten to twelve 'components' (dosha, dushya, agni, ama, srotas, srotodushti-prakara, udbhava-sthana, sanchara-sthana, adhishthana, roga-marga, sadhya-asadhyata) and names the aim of treatment samprapti vighatana, breaking the chain. Object (3) is what contemporary clinicians and papers actually operate; the case reports at modern[5] and modern[6] are written in its vocabulary. It is not object (1). No classical verse enumerating the ghataka list was found by the searches this record names in gatheringNotes, sources do not agree on its membership, and it does not acquire Charaka's authority by sharing his word. Charaka gives five analytic heads; the ghataka list is a later teaching compilation.

Across all three, samprapti is reconstructed by the clinician from history and examination rather than measured. None of the sources retrieved for this record states an observation that would confirm or refute a proposed samprapti. That is a statement about a bounded search, not about the world; notKnown gives the bound.

## At a glance

| Field | Value |
| --- | --- |
| Subject area | How disease is held to arise |
| Domain, as recorded | Ayurvedic theory of health and disease: pathogenesis |
| Contested questions | 5 |
| Stated as not known | 11 |
| Classical citations | 8, 6 quoting the text |
| Research papers assessed | 10 |
| Citations checked | 2026-10-08 |

## What is contested, and by whom

These are the questions on which the sources genuinely disagree. Each position is given as
its source states it. No position is presented as the settled answer, because none of them is.

### Does samprapti actually drive individualised Ayurvedic prescribing, as the curriculum claims?

This is contested.

- The standard Ayurvedic teaching position: diagnosis and treatment are individualised through samprapti, agni assessment and dosha analysis, and this is what distinguishes Ayurvedic from protocol-based practice.
- The empirical finding of PMID 39183608: across 141 practitioners and five case scenarios the constructs did not determine prescriptions or individualisation uniformly, and the authors explicitly raise whether this reflects an inherently weak theoretical framework.

### Are the 'samprapti ghataka' a classical list or a modern teaching device?

This is contested.

- Common modern textbook and journal presentation treats the ghataka list (dosha, dushya, agni, ama, srotas, srotodushti prakara, udbhava sthana, sanchara sthana, adhishthana, roga marga, sadhya-asadhyata) as the standard anatomy of samprapti.
- Charaka's own text gives only the five analytic heads (sankhya, pradhanya, vidhi, vikalpa, bala-kala), quoted at classical[2] and each defined at classical[3]. No classical verse enumerating the ghataka list was found by the searches named in gatheringNotes; it appears to be a later pedagogical compilation, sources do not agree on its exact membership, and no retrieved source names its author or its date. This position is unchanged from the gathered record. It is restated here because it is the entry that refuted the record's own evidenceState, and the evidenceState was rewritten to agree with it rather than this entry being softened to agree with the evidenceState.

### Verse numbering of the key Charaka passages.

This is contested.

- The Trikamji Sanskrit, verified at carakasamhitaonline on 2026-10-06, numbers the nidana-panchaka line Ni. 1/6, the jati/agati synonym line Ni. 1/11, the list of analytic heads Ni. 1/12, and the five definitions Ni. 1/12.1 to 12.5.
- Kaviratna's public-domain translation numbers the same passages 3, 5, 6 and 7 to 10, and prints each number AFTER its aphorism. His partition is not Trikamji's: his aphorism 3 spans Trikamji 1/5 to 1/9, and he breaks pradhanya across his 7 and 8 where Trikamji has one sub-part. So his numbers do not stand at a fixed offset and must never be converted arithmetically to a Trikamji number. Any citation of these verses must state which system is meant.
- The gathered record's own numbers were right but their source was vague: it said 'numbered 1.6 / 1.11 / 1.12 in modern editions' without naming an edition. On this revision every number is sourced to the named Trikamji Sanskrit instead, and no number anywhere in this record is taken on the authority of the in-copyright 1949 Gulabkunverba translation.

### Whether samprapti descriptions for modern disease entities are discoveries or restatements.

This is contested.

- Integrative reviews present mapped samprapti for conditions such as hypertension and cancer as clinically usable staging.
- PMID 34566386, from 400 observed cancer patients, concludes that modern cancer cannot be equated with any single Ayurvedic disease entity, which undercuts one-to-one mapping claims.

### Are samprapti's analytic heads five or six?

This is contested.

- Six, which is the common count in modern Ayurvedic writing and is what Kaviratna's English at classical[2] reads as: 'number (or enumeration), predominance, kind (or order), solution of doubt, strength (or intensity), and Time'.
- Five. The Sanskrit of Ni. 1/12 compounds strength and time into one member, 'sA sa~gkhyAprAdhAnyavidhivikalpabalakAlavisheShairbhidyate'; carakasamhitaonline divides the following definitions into five sub-parts and labels the fifth Bala Kala samprapti; and Kaviratna's own definitional sentence for that head runs strength and time together as dependent on one list, the season, day, night and the hours of eating. The six is an artefact of his English splitting one compound, and this record's components list has always had five. See classical[3] translatorVoice.
- A third enumeration, which is in the critic's finding itself and is supported by neither of the above: 'sankhya, vikalpa, pradhanya, bala, kala', which splits balakala into two AND omits vidhi. Vidhi is defined at length by Charaka at Ni. 1/12.3. Recorded here because this project treats disagreement as data, including disagreement with the auditor.

## What is not known

Stated rather than left out. Where a negative has actually been searched for rather than
assumed, the entry says so.

- Whether two independent Ayurvedic clinicians examining the same patient produce the same samprapti. No study addressing this was found. The searches: PubMed 'samprapti' returns 15 records (2026-10-06), all of those retrieved being case reports, case series or narrative reviews; PubMed 'samprapti AND reliability' returns 0 records. The closest data, PMID 30653338, measures agreement on constituent judgements such as prakriti and agni between four experts and finds kappa 0 to 0.4, and PMID 33750638 measures a software tool against two physicians on prakriti alone at ICC 0.72 / 0.58 / 0.44. Both bound the question; neither answers it.
- Whether any proposed samprapti has predictive validity. No study was found showing that a stated pathogenesis predicts course, complication or response to therapy better than chance, or better than the modern diagnosis alone. Bound: the samprapti searches above, plus the modern entries retrieved for this record, none of which reports a prediction tested against an outcome.
- Whether treatment chosen by samprapti vighatana outperforms treatment chosen without it. No randomised comparison on this contrast was found. Bound: the same searches. The clinical reports that do invoke the principle, modern[5] and modern[6], are an uncontrolled case series of seven and a single case, so neither is a comparison at all.
- What observation would falsify a proposed samprapti. No retrieved source gives a disconfirming criterion, and Charaka's definitional run at Ni. 1/12.1 to 12.5, newly added as classical[3], does not supply one either: it tells a physician how to subdivide a pathogenesis, not how to test one. This is the central epistemic gap in the record and retrieving the classical material the critic asked for made it sharper rather than closing it.
- The textual locus of the universally quoted maxim that treatment is nothing but nidana-parivarjana and samprapti-vighatana. It is repeated in modern Ayurvedic journals, including in the abstract of modern[6], without a verifiable chapter and verse, and it was not confirmed as a verbatim verse in Charaka or Sushruta by the searches run here.
- Whether any samprapti component (ama, agni, srotodushti) has a measurable biological correlate. Reviews retrieved for this record repeatedly propose biomarkers as future work; none of those retrieved reports a validated one.
- How samprapti should be reconciled with, or distinguished from, biomedical pathophysiology when the two conflict for the same patient. The sources retrieved assert compatibility rather than test it.
- THE COMMENTARIAL LAYER, scoped out explicitly rather than paraphrased. This record cites no commentary on samprapti and therefore says nothing about how the construct was read after Charaka. Specifically absent: Chakrapanidatta's Ayurveda Dipika on Charaka Nidana 1; Madhava Nidana chapter 1 with the Madhukosha of Vijayarakshita and Shrikanthadatta; and Vagbhata's variant at Ashtanga Hridaya Nidana 1. What was tried, so a later worker need not repeat it: GRETIL's Carakasamhita-with-Ayurvedadipika file (caraka_u.htm, retrieved 2026-10-06) does carry the commentary, but its Nidanasthana coverage is chapter 7 only, so Chakrapani on Nidana 1 is not in it. No public-domain English of the Ayurveda Dipika, the Madhukosha or the Ashtanga Hridaya was found; the standard English Madhava Nidana (Murthy, Motilal Banarsidass) is in copyright. By this project's rule of no quote, no citation, the gap is stated here rather than filled with paraphrase. The consequence for the record's claims should be stated too: because the commentarial layer is absent, this record cannot say where between Charaka and the modern manuals the ghataka checklist arose, and it does not try to.
- THE ORIGIN OF SAMPRAPTI GHATAKA. No classical locus for the ten-to-twelve-item checklist was found, and beyond that, no retrieved source names its author, its date, or the text that first prints it, and retrieved sources do not agree on its membership or even its length. The record carries it in components because it is what modern clinical writing operates, labelled as a teaching construct. Who built it, when, and from what, is unknown to this record. Bound: the searches logged in gatheringNotes, which were run against PubMed and against the public-domain Charaka and Sushruta translations, and not against the MD(Ay) thesis literature or Indian-language teaching manuals where the critic suggests it originates and where it is most likely to be documented.
- WHETHER SAMPRAPTI ITSELF HAS BEEN COMPUTATIONALLY ENCODED OR EVALUATED. The searches run for this record found no indexed study evaluating a decision-support encoding, ontology or knowledge graph of samprapti or of samprapti ghataka. What they did find is named in evidenceState and cited at modern[7] to modern[9], and in every case the construct operationalised is an input, chiefly prakriti, not samprapti. The bound, stated precisely because the critic is right that a null needs one: PubMed 'AyuSoft' returns 7 records (2026-10-06) and all 7 concern prakriti; 'Ayurveda knowledge graph' returns 3, none on samprapti; 'Ayurveda semantic web' returns 0; 'Ayurveda ontology' returns 38, of which the ones screened are dominated by gene-ontology and network-pharmacology work that uses 'ontology' in an unrelated sense. PubMed is the wrong index for this question: decision-support software of this kind is documented in IEEE and conference venues and in institutional reports, which were NOT searched. A reader should treat this as 'not found in the medical literature index searched', not as 'does not exist'.
- WHETHER CHARAKA'S FIVE ANALYTIC HEADS WERE EVER USED AS THE MODERN GHATAKA ARE. classical[3] establishes that Charaka defines the five heads. Nothing retrieved here shows them being applied, in any period, to work up an individual patient, and the modern clinical reports retrieved use the ghataka vocabulary rather than the five heads. Whether the five heads are a live clinical instrument or a classificatory scheme that the teaching tradition replaced is not something this record can say.

## The terms this concept is built from

| Term | What it names |
| --- | --- |
| nidana (hetu) | The causative or exciting factors, dietary, behavioural, seasonal, psychological or traumatic, that begin the sequence. |
| [dosha prakopa](https://nighantu.ageayurveda.com/lexicon/dosha-prakopa/) | Disturbance or aggravation of one or more of vata, pitta and kapha by those causes. |
| dushya | The tissue elements (dhatus and malas) that the disturbed dosha acts upon; literally 'that which is spoilt'. |
| srotas / adhishthana | The channel system and the anatomical site where the disturbed dosha settles and the disease takes form. |
| vyadhi (roga) | The resulting named disease, with its purvarupa (premonitory signs) and rupa (manifest signs). |
| sankhya | Analytical head 1: the number of varieties of the disease. Charaka's own examples are eight kinds of fever, five kinds of tumour, seven kinds of leprosy. |
| pradhanya | Analytical head 2: which dosha predominates in the mixture. Charaka defines it as judging which fault is the stronger or the strongest, the comparative relating to two and the superlative to three. |
| vidhi | Analytical head 3: the kind or order of classification. Charaka gives three cuts: two kinds, natural and accidental; three kinds, by which of wind, bile and phlegm has been excited; four kinds, by curability, incurability, mildness and violence. |
| vikalpa | Analytical head 4: the ascertainment of the measure in which the faults, existing in a state of union, have been excited. Kaviratna renders the term itself as 'solution of doubt', which is his English and not a second meaning; his following sentence gives the definition just quoted. |
| bala-kala | Analytical head 5: strength-and-time, ONE head and not two. Charaka defines the distinctions of strength and time together in a single sentence dependent on a single list, the season, day, night and the hours of eating, and the Sanskrit of Ni. 1/12 compounds them as balakala. Kaviratna's English splits them into 'strength (or intensity), and Time', which is where the widely repeated count of six analytic heads comes from. See classical[3] translatorVoice and contested[4]. |
| [samprapti ghataka](https://nighantu.ageayurveda.com/lexicon/samprapti-ghataka/) | The modern teaching-manual checklist of pathogenesis components (dosha, dushya, agni, ama, srotas, srotodushti prakara, udbhava sthana, sanchara sthana, adhishthana, roga marga, sadhya-asadhyata). LABEL, kept deliberately blunt: this is a twentieth-century pedagogical construct, not a classical enumeration. The searches named in gatheringNotes found no verse in Charaka or Sushruta listing it, sources disagree on its membership and even on its length, and no retrieved source gives it an author or a date. It is nonetheless the object modern clinical writing operates under the name samprapti, which is why it is in this list at all. See contested[1] and notKnown. |
| samprapti vighatana | Breaking or dismantling the pathogenesis; the stated aim of treatment in modern Ayurvedic writing, and the only reason the concept carries clinical weight. Attested in use rather than in a located verse: the uterine-fibroid case series at modern[5] says its protocol was chosen 'befitting the Samprapti Vighatana of Granthi', and the migraine case report at modern[6] pairs it with nidana parivarjana in the same sentence. The textual locus of the maxim that treatment is nothing but nidana-parivarjana and samprapti-vighatana was not confirmed; see notKnown. |

## The classical passages

Each citation gives its address so a reader can check it in a printed edition, our account
of what it establishes, and the result of reading it against its source.

### Charaka Samhita Nidana Sthana 1 (Jwara Nidana):Ni. 1/6 in the Trikamji numbering; Kaviratna prints his aphorism number 3 AFTER the run that contains it, checked against the source

> The ascertainment of disease is to be had from 'Nidana', 'Purva-rupa', 'Linga', 'Upacaya', and 'Samprapti.'

tr. Avinash Chandra Kaviratna, Charaka-Samhita translated into English, Calcutta: Dass, issued in parts 1896-1913; public domain

That Charaka's Nidana Sthana 1 names samprapti as one of five things from which a disease is ascertained. It does NOT establish that Charaka groups the five under a collective name or calls them five: there is no collective noun in this line. Note on the Romanisation: Kaviratna's 'Upacaya' here renders upashaya, not upachaya, and his Romanisation of sha as c, g or s is inconsistent throughout the scan.

Source: https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

### Charaka Samhita Nidana Sthana 1 (Jwara Nidana):Ni. 1/11 in the Trikamji numbering; Kaviratna's aphorism 5, printed after the aphorism, checked against the source

> Samprapti, 'jati', and 'agati' of disease, are words of the same import

tr. Avinash Chandra Kaviratna, Charaka-Samhita translated into English, Calcutta: Dass, issued in parts 1896-1913; public domain

The classical definition by synonym: samprapti, jati and agati are words of the same import. Kaviratna's own footnote to this aphorism glosses jati as janma, birth, and agati as 'coming in, as gati means going out'. That gloss is the translator's and is reported as his, not as Charaka's.

Source: https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

### Charaka Samhita Nidana Sthana 1 (Jwara Nidana):Ni. 1/12 in the Trikamji numbering; Kaviratna's aphorism 6, printed after the aphorism, checked against the source

> 'Samprapti' is distinguished by these considerations, viz., number (or enumeration), predominance, kind (or order), solution of doubt, strength (or intensity), and Time.

tr. Avinash Chandra Kaviratna, Charaka-Samhita translated into English, Calcutta: Dass, issued in parts 1896-1913; public domain

That Charaka gives samprapti a list of analytic headings, and nothing more. The heads are sankhya, pradhanya, vidhi, vikalpa and balakala; each is defined at classical[3]. Kaviratna renders vikalpa as 'solution of doubt', and his following sentence glosses it as 'the ascertainment of the measure in which the faults, existing in a state of union, have been excited'. This citation establishes that the construct is subdivided. It establishes nothing about whether a samprapti can be reliably stated, and nothing about individualisation of treatment.

Source: https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

### Charaka Samhita Nidana Sthana 1 (Jwara Nidana); Kaviratna's 'Lesson I':Ni. 1/12.1 to 1/12.5 in the Trikamji numbering as carakasamhitaonline divides it; Kaviratna's aphorisms 7 to 10, each printed after its aphorism, checked against the source

> By Number or (or enumeration) is meant such as these : Eight kinds of Fevers, Five kinds of tumours, Seven kinds of leprosy, and so on. Predominance, again, applies to faults, and consists in judging which is the stronger or the strongest. The comparative relates to two, the superlative to three. Kind (or Order) is as follows : — Diseases are of two kinds, as natural and accidental. They are of three kinds, according to the particular fault that has been excited among the three that exist (viz., wind, bile, and phlegm). They are of four kinds, considering curability, incurability, mildness, and violence. Solution of doubt (Vikalpa), in this connection, means the ascertainment of the measure in which the faults, existing in a state of union, have been excited. The distinctions of Strength and Time (in respect of disease) are dependant on the season (in which the disease has happened), day, night, the hours of eating, &c.

tr. Avinash Chandra Kaviratna, Charaka-Samhita translated into English, Calcutta: Dass, issued in parts 1896-1913; public domain

Each of samprapti's five analytic heads defined in Charaka's own words. This is the material the critic's first 'missing' finding asked for, and it is the closest thing in the samhita to an operational definition of samprapti. What it operationalises should be stated precisely, because it is less than the finding implies: it tells a physician how to SUBDIVIDE a pathogenesis once he has one, by counting varieties, ranking doshas, assigning a class, estimating proportions and reading strength and timing off the calendar. It gives no procedure for arriving at a pathogenesis, no criterion for choosing between two rival ones, and no observation that would show one to be wrong. Retrieving it also settled the five-versus-six count against the translation; see translatorVoice.

Source: https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

### Charaka Samhita Nidana Sthana 1 (Jwara Nidana):Kaviratna's aphorism 18; his aphorism 16-17, immediately preceding, is the list of causes that excite the wind. No Trikamji number is given: see numberingCheck, checked against the source

> Overtaking in that state the food-juice which is the first product (or result) of food, it obstructs those ducts which bear the food-juice and the sweat.

tr. Avinash Chandra Kaviratna, Charaka-Samhita translated into English, Calcutta: Dass, issued in parts 1896-1913; public domain

A worked classical example of a samprapti, in Charaka's own sequence: the excited wind enters the amashaya, mingles with the heat of the digestive fire, overtakes the food-juice, obstructs the ducts bearing food-juice and sweat, then affects the digestive fire and expels its heat from the pakvashaya over the whole body, and fever is generated. The gathered record's claim that 'this is the template all later samprapti narratives follow' has been CUT: it is an unsourced generalisation over a literature this record has not surveyed, and the quote cannot carry it. What the passage establishes is that Charaka gives at least one pathogenesis as a staged narrative of this shape.

Source: https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

### Charaka Samhita Sutra Sthana 28 (Vividhashitapitiya):Kaviratna's aphorism 15; the second sentence of the quote corresponds to Su. 28/8 in the Trikamji numbering. See numberingCheck before citing this as 28/8 whole, checked against the source

> Through these causes, the wind, bile, and phlegm, being excited in particular parts of the body, produce different diseases. The faults becoming excited in particular places such as the food-fluids and others, produce particular diseases.

tr. Avinash Chandra Kaviratna, Charaka-Samhita translated into English, Calcutta: Dass, issued in parts 1896-1913; public domain

The site-specificity principle that samprapti rests on: which disease appears depends on the place in which the disturbed dosha is excited, not on the dosha alone. Charaka says this and then undertakes to enumerate which diseases arise from which seat. The principle is stated; no criterion is given for determining, in a given patient, which seat is involved.

Source: https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

### Madhava Nidana (Rugvinishchaya) of Madhavakara, chapter 1 1

NARROWED. Two PubMed-indexed philological notes take the nidana-panchaka of Madhava Nidana chapter 1 as their subject and name samprapti among its five limbs: PMID 12572581 (1997) and PMID 12585278 (1999), the second explicitly a continuation of the first. Both were resolved by efetch on 2026-10-06 and both carry abstracts. That is the whole of what this entry now supports.

### Ashtanga Hridaya, Nidana Sthana 1 Nidana Sthana 1

GUTTED, deliberately, and this entry should be read as a placeholder rather than as a citation. No verse of the Ashtanga Hridaya was retrieved for this record, in Sanskrit or in English. The gathered entry asserted that 'Vagbhata restates the five-limbed diagnostic scheme with samprapti as its final limb' and that the chapter is 'cited in secondary literature as a locus for sammurchana within the samprapti frame'. Neither claim is quoted and the second names no secondary source, so by this project's rule of no quote, no citation, both are withdrawn. See citationsRemoved[0]. The gap is now stated in notKnown rather than carried as a soft claim.

## What the research actually shows

Every paper located for this concept, with what it measured and what it does and does not
establish. The assessment is ours.

### Myth and reality of "theory-driven individualised practice" in Ayurveda: Mapping physicians' approaches using case-based scenarios.

Indian J Med Ethics · 2024 · PMID 39183608 (https://pubmed.ncbi.nlm.nih.gov/39183608/)

Directly tests whether samprapti and related constructs actually drive clinical decisions. 141 registered Ayurveda practitioners with five or more years' experience responded to five case vignettes, giving diagnosis, treatment plan and the principles behind the plan. The authors report a significant lack of consensus on clinical diagnoses, on interventions, and on the understanding of pathophysiology, with many conflicting opinions, and conclude that theoretical constructs do not uniformly determine prescriptions or individualisation.

**How much it shows.** Empirical cross-sectional vignette survey and the single most informative modern study for this concept, but with real limits: convenience sample, emailed self-report, hypothetical cases rather than observed consultations, and no measure of chance-corrected agreement. It is a negative finding and the authors state it as such.

### Reliability of Ayurvedic Diagnosis for Knee Osteoarthritis Patients: A Nested Diagnostic Study Within a Randomized Controlled Trial.

J Altern Complement Med · 2019 · PMID 30653338 (https://pubmed.ncbi.nlm.nih.gov/30653338/)

Inter-rater reliability of Ayurvedic diagnosis, nested in a randomised controlled trial of knee osteoarthritis: 30 patients assessed sequentially by 4 Ayurvedic experts. Percentage agreement on the final consented diagnosis was high (95%), but chance-corrected kappa for central diagnostic components including prakriti and agni was fair to poor, with kappa values between 0 and 0.4. Agreement on disease-related entities was better than on constitutional entities.

**How much it shows.** Empirical diagnostic reliability study, small (30 patients, 4 raters), single condition, single centre. It measures the inputs a samprapti is built from, not the samprapti statement itself, so it bounds rather than directly tests the construct. Its result is unfavourable.

### Understanding hypertension in the light of Ayurveda.

J Ayurveda Integr Med · 2018 · PMID 29153383 (https://pubmed.ncbi.nlm.nih.gov/29153383/)

Proposes that hypertension be understood as the prasara stage of dosha spread involving vyana vata, prana vata, sadhaka pitta, avalambaka kapha and rakta, with avarana. Opens by stating that different theories have been proposed to explain hypertension from an Ayurvedic perspective and there is no consensus amongst the experts.

**How much it shows.** Narrative literature review. No patients, no data, no test of the proposal. Useful mainly as documentation that experts disagree about the samprapti of even a well-defined modern condition.

### Understanding the etiopathogenesis and diagnosis of malignancy in the framework of Ayurveda: A review based on experience of working in an institute of oncology.

Ayu · 2020 · PMID 34566386 (https://pubmed.ncbi.nlm.nih.gov/34566386/)

Proposes an Ayurvedic etiopathogenesis and diagnostic framework for malignancy based on observation of 400 cancer patients at an oncology institution, and concludes that modern cancer cannot be equated with any single disease entity in Ayurvedic literature.

**How much it shows.** Uncontrolled observational case-series-derived conceptual proposal. No comparator, no blinding, no reliability testing of the pathogenesis assignments. The honest conclusion (no one-to-one mapping exists) is more defensible than the proposed framework.

### Definition of Nidana Pancaka (first chapter of Madhavanidana).

Bull Indian Inst Hist Med Hyderabad · 1999 · PMID 12585278 (https://pubmed.ncbi.nlm.nih.gov/12585278/)

Historical-textual account of the definition of nidana-panchaka in the first chapter of Madhava Nidana, covering nidana, purvarupa, rupa, upashaya and samprapti. With its companion PMID 12572581 (1997), of which it is explicitly a continuation, it attests that the five-limbed scheme is set out and defined in that chapter. It does NOT establish when or where the scheme was consolidated; the gathered record said it documented that, and the abstract does not.

**How much it shows.** Historical article in a history-of-medicine bulletin, not an empirical study. Cite for provenance only. CORRECTION to the gathered record, which said it is 'not indexed with an abstract of substance': an abstract IS indexed and was retrieved on 2026-10-06. It is short and is largely a continuation note pointing back to the 1997 article (PMID 12572581), stating that the present part deals with nidana, purvarupa, rupa, upashaya and samprapti. The accessibility complaint stands, the bulletin is not widely held, and no full text was obtained, so nothing beyond the abstract is claimed.

### Ayurvedic intervention in the management of uterine fibroids: A Case series.

Ayu · 2014 · PMID 26664240 (https://pubmed.ncbi.nlm.nih.gov/26664240/)

Seven cases of uterine fibroid treated with Ayurvedic formulations, with the abstract stating that the condition 'was critically reviewed in the context of Granthi Roga (disease) and treatment protocol befitting the Samprapti Vighatana of Granthi (encapsulated growth) was subjected in patients of uterine fibroids'. Cited for ONE narrow purpose: it is quoted evidence that samprapti vighatana is used as the operative treatment-selection principle in published clinical Ayurvedic writing, which is the only reason the concept carries clinical weight. It is not cited as evidence that the principle works.

**How much it shows.** Case series of seven, uncontrolled, no comparator, no blinding, outcome assessed by ultrasonography with no stated reader blinding, and no reliability check on the samprapti assignment itself. The reported outcome, absence of fibroid on USG at seven weeks in the reported cases, is not evidence of efficacy at this design and this record makes no efficacy claim from it. Its value here is terminological, not clinical.

### Ayurveda management of migraine - a case report.

J Ayurveda Integr Med · 2024 · PMID 39454285 (https://pubmed.ncbi.nlm.nih.gov/39454285/)

Single case report of migraine (Ardhavabhedaka) in a 35-year-old man, whose abstract reads 'For the proper Samprapti vighatana, Nidana parivarjana (abstinance from the eitiological factors), Deepana, Paachana, Siravyadha, Nasya and Dosha ShamanaChikitsa principles were adopted'. Cited for the same narrow terminological purpose as modern[5], and additionally because it pairs samprapti vighatana with nidana parivarjana in exactly the formula whose textual locus this record could not confirm; see notKnown. Spellings are the abstract's.

**How much it shows.** n = 1, uncontrolled, unblinded, self-reported outcome scales (MIDAS 19 to 4, NPR 8 to 2), no follow-up period stated for relapse in the abstract. No evidential weight for efficacy and none is claimed. It is quoted for its vocabulary.

### Correlation of prakriti diagnosis using AyuSoft prakriti diagnostic tool with clinician rating in patients with psychiatric disorders.

J Ayurveda Integr Med · 2021 · PMID 33750638 (https://pubmed.ncbi.nlm.nih.gov/33750638/)

The one measured evaluation of an AyuSoft module that these searches found. 112 stabilised psychiatric inpatients had prakriti determined by the AyuSoft tool '(developed by C-DAC, Pune, India)' and, independently, by two Ayurveda physicians on clinical examination. Agreement between tool and physicians, by intraclass correlation: vata ICC 0.72 (Cronbach alpha 0.83), pitta ICC 0.58 (0.62), kapha ICC 0.44 (0.51). The authors also state they 'could not find any literature regarding reliability of a prakriti diagnostic tool in patients with psychiatric conditions'. This is cited because the critic is right that a null cannot honestly be reported without naming the attempts: AyuSoft is the named attempt, this is its measurement, and the result is weakest on kapha. CRITICAL SCOPE LIMIT: AyuSoft is evaluated here on PRAKRITI, which is an input to a samprapti, not on samprapti or on samprapti ghataka. It bounds the construct; it does not test it.

**How much it shows.** Empirical, with chance-corrected and consistency statistics, which is rare in this literature. Limits are real: single centre, psychiatric inpatients only, two raters, agreement measured tool-against-clinician rather than clinician-against-clinician, and an ICC from a two-way mixed consistency model on mean ratings, which is the more forgiving choice. The authors' own conclusion is that the tool was 'feasible' and 'comparable'; an ICC of 0.44 on kapha is reported here as what it is rather than as comparability.

### Towards standardization of Prakriti Evaluation: A scoping review of modern assessment tools and their psychometric properties in Ayurvedic medicine.

J Ayurveda Integr Med · 2025 · PMID 40582042 (https://pubmed.ncbi.nlm.nih.gov/40582042/)

Scoping review (Arksey and O'Malley framework) of 32 studies of modern prakriti assessment tools and their psychometric properties. Of 16 questionnaire studies, 3 were validated, 6 had established reliability and 3 had both; 5 used algorithm-based methods, 3 of those validated machine-learning models; 11 used devices, with 'only one device validated and providing access to data for reproducibility'. The authors state that machine-learning models 'show potential but suffers challenges in accuracy, replicability and finding the ground truth in a robust manner'. This is the second half of naming the attempts: it documents that computational and instrumental operationalisation of an Ayurvedic diagnostic construct has been attempted at scale and audited, and reports the audit's result. Same scope limit as modern[7]: the construct operationalised is prakriti, not samprapti.

**How much it shows.** A scoping review, so it maps a literature rather than pooling effects; no meta-analysis, no risk-of-bias instrument reported in the abstract, and inclusion is limited to tools appearing in scientific literature, which will under-count unpublished clinical software. It is nonetheless a systematic, recent and adversarial-to-its-own-field audit, and its 'ground truth' point is the one that bears hardest on samprapti: a tool can only be validated against a reference standard, and for these constructs the reference standard is itself expert judgement of the kind PMID 30653338 measured at kappa 0 to 0.4.

### An analysis of application of health informatics in Traditional Medicine: A review of four Traditional Medicine Systems.

Int J Med Inform · 2015 · PMID 26160148 (https://pubmed.ncbi.nlm.nih.gov/26160148/)

Review of health informatics across four traditional medicine systems, including Ayurveda, in a mainstream medical informatics journal. The abstract states that 'amongst major advancements in TCM and Ayurveda are bioinformatics, development of Traditional Medicine databases for decision system support, data mining and image processing', and that 'informatics may not be able to address all the emerging areas of Traditional Medicine because the concepts in Traditional Medicine system of medicine are different from modern system'. Cited to name the decision-support and knowledge-representation effort at the level at which a retrieved source actually describes it, rather than leaving the critic's 'Ayurveda ontology / knowledge-graph literature' as an unaddressed gesture.

**How much it shows.** Narrative review with a stated but loose search (four databases plus Google, broad terms), no appraisal of the systems it describes, and now a decade old. It establishes that the effort exists and is described in the informatics literature. It reports no evaluation of any such system's accuracy or reliability, and names no encoding of samprapti.

## Citation

Age Ayurveda Nighantu, "Samprapti (the Ayurvedic model of pathogenesis)", https://nighantu.ageayurveda.com/concept/samprapti/, CC BY 4.0.
Whole concept set: https://nighantu.ageayurveda.com/concepts.json and https://nighantu.ageayurveda.com/concepts.csv.

Educational reference only. This page describes what a body of theory claims and how well it
is evidenced. Nothing here is advice, and nothing here describes how any condition should be
treated.