# prasara (प्रसर)

> Canonical version of this page: https://nighantu.ageayurveda.com/lexicon/prasara/

An Ayurvedic technical term, rendered into English in 4 different ways across 5 sources.
The renderings do not agree, and the difference between them changes what the term is taken
to mean.

## Identification

| Field | Value |
| --- | --- |
| Transliteration | prasara |
| Devanagari | प्रसर |
| Also written | prasaraḥ, प्रसरः, prasaraṇa, प्रसरण, prasar |
| Category, as gathered | kriyakala |
| Grouped under | Causation and the course of disease |
| Classical citations | 5 |
| Citations checked | 2026-10-08 |

## How it is translated, and whether the translation holds

Each rendering is given with the source that uses it. The assessment is ours.

### Stage of a dosha spreading beyond its own location

WHO International Standard Terminologies on Ayurveda · ITA-4.6.9 (prasaraḥ), ch. 4, printed p. 114 · who-ista

WHO description, verbatim: 'The third stage of disease manifestation, when aggravated dosha migrates outside its own location.' Re-read from the PDF. WHO uses 'migrates', a stronger directional verb than 'spreads'.

Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that
licence permits, and deliberately absent from the downloadable dataset, which is CC BY 4.0.

### Spreading of vata / Spreading of pitta / Spreading of kapha

WHO International Standard Terminologies on Ayurveda · ITA-5.2.1.8 (vātaprasaraṇam), ITA-5.2.2.5 (pittaprasaraḥ), ITA-5.2.3.4 (kaphaprasaraḥ) · who-ista

All three re-read and all classified as disorders with symptom lists. Note WHO uses the derived form vātaprasaraṇam for vata but prasaraḥ for pitta and kapha, an inconsistency in the Sanskrit column itself, confirmed in the PDF.

Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that
licence permits, and deliberately absent from the downloadable dataset, which is CC BY 4.0.

### expansion (Prasara)

Sushruta Samhita, tr. Kaviraj Kunja Lal Bhishagratna (1907) · Sutrasthana ch. XXI · public-domain-translation

Bhishagratna consistently uses 'expansion' and 'expand and overflow', not 'spread'. His choice tracks the text's fermentation and dam-burst similes better than 'spread' does.

### (the source's rendering is a full definition and is not reproduced here)

easyayurveda.com (Dr Raghuram Y.S. / Dr J.V. Hebbar) · https://www.easyayurveda.com/2016/06/13/shat-kriya-kala-stage-wise-disease-management/ · practitioner-reference

The source's rendering is not reproduced here, because this project has not cleared that source for quotation.

String-matched on the retrieved page, with the page's curly apostrophes. Adds 'liquification', which is an interpretation drawn from the fermenting-dough simile rather than a rendering of prasara. Flag it as gloss, not translation.

### Prasara-Avastha which means spread of vitiated Doshas from their specific sites

Menon M, Shukla A, J Ayurveda Integr Med 2018 (PMID 29153383) · abstract · peer-reviewed-paper

String-matched in the retrieved abstract. The only peer-reviewed source located that gives prasara a working definition, and it does so in order to map hypertension onto it.

## The classical passages

### Sushruta Samhita Sutrasthana 21:28, checked against the source

> अत ऊर्ध्वं प्रसरं वक्ष्यामः- तेषामेभिरातङ्कविशेषैः प्रकुपितानां किण्वोदकपिष्टसमवाय इवोद्रिक्तानां प्रसरो भवति । तेषां वायुर्गतिमत्त्वात् प्रसरणहेतुः सत्यप्यचैतन्ये । ... तद्यथा- वातः, पित्तं, श्लेष्मा, शोणितं, वातपित्ते, वातश्लेष्माणौ, पित्तश्लेष्माणौ, वातशोणिते, पित्तशोणिते, श्लेष्मशोणिते, वातपित्तशोणितानि, वातश्लेष्मशोणितानि, पित्तश्लेष्मशोणितानि, वातपित्तकफाः, वातपित्तकफशोणितानीति; एवं पञ्चदशधा प्रसरन्ति ॥२८॥

Sanskrit mūla · https://www.siva.sh/sushruta-samhita/sutra-sthana/21/28

Three load-bearing points: the fermentation simile (kiṇva + udaka + piṣṭa) for how doshas overflow; the doctrine that VAYU is the agent of prasara because it alone has motion (vāyur gatimattvāt prasaraṇahetuḥ satyapy acaitanye); and the explicit fifteen-fold enumeration, now quoted in full, ending एवं पञ्चदशधा प्रसरन्ति, 'thus they spread in fifteen ways'. The fifteen count is the text's own, not a commentator's.

### Sushruta Samhita Sutrasthana 21:28, checked against the source

> Now we shall describe the expansion ( Prasara ) of the deranged humours. The deranged humours, aggravated by the above mentioned causes, expand and overflow the limits of their respective localities in the same manner as, cakes, soaked in any ferment or enzyme and kept standing over night, ferment and rise through the acquisition of new and unseen attributes. The Vayu, which is possessed of locomotion or extreme mobility, should be looked upon as the cause of their expansion or over-flowing.

tr. Kaviraj Kunja Lal Bhishagratna (1907) · https://www.wisdomlib.org/hinduism/book/sushruta-samhita-volume-1-sutrasthana/d/doc122917.html

Bhishagratna's English for the prasara definition, the fermentation simile and the vayu-as-agent doctrine.

### Sushruta Samhita Sutrasthana 21:32, checked against the source

> एवं प्रकुपितानां प्रसरतां वायोर्विमार्गगमनाटोपौ, ओषचोषपरिदाहधूमायनानि पित्तस्य, अरोचकाविपाकाङ्गसादाश्छर्दिश्चेति श्लेष्मणो लिङ्गानि भवन्ति; तत्र तृतीयः क्रियाकालः ॥३२॥

Sanskrit mūla · https://www.siva.sh/sushruta-samhita/sutra-sthana/21/32

Gives the dosha-wise signs of prasara and marks it the third kriyākāla. Note the stage-marker sits at verse 32, four verses after the prasara section opens at 28, so citing 'Su.Su. 21/28' or 'Su.Su. 21/32' for prasara are both defensible and published sources differ.

### Sushruta Samhita Sutrasthana 21:32, checked against the source

> The Vayu, thus aggravated and expanded, tends to deviate from its right passage and gives rise to a swelling or distention of the abdomen, accompanied by a rumbling sound in the intestines. The Pitta, under the similar condition, gives rise to heat, and a sort of sucking, burning pain in the affected part, together with a sensation of radiation or evaporation of heat from its surface. The Kapha, under the circumstance, would usher in a complete aversion to food, inertness of the limbs, vomiting and impaired digestion. The preceding symptoms, caused by the aggravation and expansion of the bodily humours, should be the third occasion for medical treatment

tr. Kaviraj Kunja Lal Bhishagratna (1907) · https://www.wisdomlib.org/hinduism/book/sushruta-samhita-volume-1-sutrasthana/d/doc122917.html

Bhishagratna's English for the dosha-wise prasara signs and the third-occasion marker.

### Sushruta Samhita Sutrasthana 21:29-30, checked against the source

> कृत्स्नेऽर्धेऽवयवे वाऽपि यत्राङ्गे कुपितो भृशम् । दोषो विकारं नभसि मेघवत्तत्र वर्षति ॥२९॥ नात्यर्थं कुपितश्चापि लीनो मार्गेषु तिष्ठति । निष्प्रत्यनीकः कालेन हेतुमासाद्य कुप्यति ॥३०॥

Sanskrit mūla · https://www.siva.sh/sushruta-samhita/sutra-sthana/21/29

The rain-cloud simile (29): a dosha strongly provoked in the whole body, half of it, or one part 'rains down' disorder there like a cloud in the sky. Verse 30, now quoted in full rather than described, is the latency verse: a not-excessively-provoked dosha stays LATENT (līno) in the channels (mārgeṣu) and, unopposed, is provoked later on meeting a cause. This is the classical basis for a gap between prasara and sthānasaṃśraya.

## Not to be confused with

- **sthānasaṃśraya.** Prasara is doshas in motion, not yet settled. Sthānasaṃśraya is the same doshas coming to rest in a site and producing prodromes. WHO's own wording is the cleanest statement of the difference: 'migrates outside its own location' versus 'lodges in a different location ... and gives rise to prodromal symptoms'. Sources that gloss prasara as 'localization' have collapsed the two.
- **srotas / srotodusti.** Srotas are the channels through which prasara happens, 21.30 says the latent dosha stays mārgeṣu, and srotodusti is their vitiation. Prasara names the dosha's movement, not the channel pathology.
- **vyāpti / vikṣepa.** General Sanskrit words for pervasion and scattering, with no kriyakala staging sense. Do not treat as synonyms.
- **vātaprasaraṇam (WHO ITA-5.2.1.8).** WHO classifies this as a DISORDER 'characterized by abnormal movements of air; gurgling intestinal sounds or borborygmi', a symptom cluster, not the third stage of the kriyakala sequence. Same root, different WHO entity.

## Renderings that do not hold

- 'metastasis'. A recurring move in Ayurveda-and-cancer writing. Metastasis is dissemination of neoplastic cells; prasara is overflow of doshas and can occur with no disease present at all. The analogy may be pedagogically useful but it is not a translation.
- 'systemic circulation' / 'dissemination via bloodstream'. Imports a vascular mechanism. The text's agent is vayu's mobility, and the fifteen enumerated combinations include doshas spreading with or without śoṇita, blood is one participant among fifteen combinations, not the medium.
- 'liquefaction'. A gloss derived from the fermenting-dough simile that has hardened into a translation in some practitioner sources. The word prasara does not mean liquefaction.

## Open questions

Recorded rather than resolved.

- Whether any source defines a clinical test that distinguishes prasara from prakopa in a patient.
- Whether the fifteen-fold enumeration in 21.28 is used anywhere in modern classification or is purely scholastic.
- What Dalhana says about the fifteen-fold enumeration, not checked.

## Citation

Age Ayurveda Nighantu, "prasara", https://nighantu.ageayurveda.com/lexicon/prasara/, CC BY 4.0.
Whole lexicon: https://nighantu.ageayurveda.com/lexicon.json and https://nighantu.ageayurveda.com/lexicon.csv.

Educational reference only. A term entry explains what a word means and how it has been
translated. Nothing here is advice.