Shatkriyakala offers an ordered classical model of disease evolution and points of intervention. The six labels are highly testable, especially when a question asks what happens immediately before manifestation.
Exam focus: Shatkriyakala Six Stages. Revise this topic through six concept sections, a comparative fact table, common exam traps and original practice questions.
The six-stage sequence
A commonly taught sequence attributed to Sushruta is Sanchaya → Prakopa → Prasara → Sthanasamshraya → Vyakti → Bheda. Shat indicates six; kriyakala refers to the stages or opportunities relevant to intervention. Memorise the order first. Exams often change only one pair of stages to create a plausible distractor.
Early stages: Sanchaya, Prakopa and Prasara
Sanchaya means accumulation. Prakopa indicates aggravation, while Prasara means spreading or dissemination within the traditional disease account. The distinctions concern a conceptual timeline and are not measurements of pathogens, inflammatory mediators or tumour staging.
Localization: Sthanasamshraya
Sthanasamshraya describes localisation or lodging in a susceptible site. Traditional discussions associate this stage with early or premonitory changes. It is a critical bridge between general disturbance and visible expression, which is why examiners frequently contrast it with Vyakti.
Manifestation and differentiation
Vyakti corresponds to recognizable manifestation, whereas Bheda concerns differentiation or later development of distinct forms and complications. Not every illness follows a predictable six-step clinical course. Do not use the model to delay diagnosis of a real medical problem.
How to solve tricky MCQs
If the question says ‘accumulation’, the answer is Sanchaya; ‘spread’ means Prasara; ‘localisation’ means Sthanasamshraya; ‘manifestation’ means Vyakti. A question about a fully differentiated condition usually indicates Bheda. Understanding verbs makes these terms easier to recall.
Worked exam example
‘Which stage immediately precedes Vyakti?’ The correct answer is Sthanasamshraya. ‘Which immediately follows Prakopa?’ The answer is Prasara. These two pairs are frequent confusion points in last-minute revision.
Quick revision: Shatkriyakala Six Stages
The following short-reference table is designed for last-minute recall. Read it after completing the explanations above; some labels refer to classical theories rather than validated modern measurements.
| Term | What to remember |
|---|---|
| Sanchaya | Accumulation; stage one |
| Prakopa | Aggravation; stage two |
| Prasara | Spread; stage three |
| Sthanasamshraya | Localization; stage four |
| Vyakti | Manifestation; stage five |
| Bheda | Differentiation/later development; stage six |
Common exam traps
- Prasara occurs before Sthanasamshraya in the usual sequence.
- Vyakti is manifestation; Bheda follows it.
- Do not treat this model as an emergency triage protocol.
Practice MCQs with explanations
These are original practice questions prepared for revision; they are not represented as actual UPSC previous-year questions. Open each question to reveal its answer and explanation.
Q1. Which stage follows Prakopa?
Q2. Which stage describes localization?
Q3. Which stage is the last in the standard sequence?
Q4. Which description best matches the term 'Prakopa'?
Q5. Which description best matches the term 'Sthanasamshraya'?
Frequently asked questions
What are the six Shatkriyakala stages?
Sanchaya, Prakopa, Prasara, Sthanasamshraya, Vyakti and Bheda.
Which stage means disease manifestation?
Vyakti.
Which stage is associated with localization?
Sthanasamshraya.
Related CrackTarget study resources
References and further study
- NCISM BAMS curriculum and subject syllabi
- National Commission for Indian System of Medicine: Ayurveda education
- NCCIH: Ayurvedic medicine, evidence and safety
Editorial note: For exam preparation and historical/classical medical education only. Classical descriptions are identified as traditional concepts; they are not standalone clinical advice. This page does not recommend self-medication, induced emesis, purgation, bloodletting or other invasive procedures. Consult the applicable official exam notification and the relevant NCISM curriculum for exact syllabus coverage. Medical content should receive qualified editorial review before publication.