Concept of Purishvaha Srotas in the Pathogenesis of Arsa: A Classical Ayurvedic Review

Arsa (haemorrhoids) is a commonly described anorectal disorder in Ayurvedic literature characterized by pain, bleeding, prolapse, and difficulty in defecation. The functional integrity of Purisavaha Srotas, which governs the formation and elimination of fecal matter, is essential for maintaining anorectal health. Disturbance in this Srotas plays a key role in the etiopathogenesis of Arsa. This paper presents a conceptual review based on classical Ayurvedic texts including Charaka Samhita, Susruta Samhita, and Astanga Hrdaya. The study highlights the role of Apana Vayu dysfunction, Tridosa imbalance, and Gudapradesha structural involvement in the development of Arsa. Integrating classical Ayurvedic understanding with modem. anatomical interpretation may help improve preventive and therapeutic strategies in hemorrhoidal disease.