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Chapter 27 — Udavartadi Nidanam

The 27th chapter of Madhava Nidana deals with Udavartadi Nidanam which is Reverse Peristalsis and the like. When the wave-like muscle contractions of peristalsis move backward instead of forward, it’s called retroperistalsis, antiperistalsis or reverse peristalsis. This is what happens when your vomiting reflex is triggered.

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