Samprapti — The Six-Stage Disease Process
Samprapti (pathogenesis) describes the six sequential stages through which imbalanced doshas progress from accumulation to full disease manifestation — enabling early intervention long before symptoms become irreversible.
Samprapti (disease progression) is one of Ayurveda's most clinically valuable concepts — the detailed six-stage model of pathological development. The six stages (Shatkriyakala) are: Sanchaya (accumulation — doshas begin to build in their home sites); Prakopa (provocation — doshas become aggravated and begin to spread); Prasara (spread — doshas leave their home sites and circulate); Sthana Samshraya (deposition — doshas settle in a weakened tissue); Vyakti (manifestation — symptoms become apparent); and Bheda (differentiation — the disease becomes fully established and chronic). The extraordinary clinical value of this model is that Stages 1-3 (Purvarupa — pre-disease) are largely asymptomatic but can be detected by trained Ayurvedic examination and reversed with relatively simple interventions. This anticipates preventive medicine's concept of early intervention before irreversible pathological change.
The wise physician detects disease in its early stages — in the accumulation and provocation — before it has spread and taken root.
Modern systems biology's concept of 'tipping points' in disease progression — periods when the body's regulatory systems can still restore homeostasis with minimal intervention — mirrors the Samprapti model's identification of early correctable stages before pathological processes become self-sustaining.
Charaka Samhita