This document discusses the Ayurvedic concept of Kriyakala, which refers to the appropriate time for treatment of a disease based on its stage of progression. It describes the six stages of disease progression as sanchaya, prakopa, prasara, sthana samsraya, vyakti, and bheda. The stages involve the accumulation, aggravation, spreading, localization, manifestation of symptoms, and resolution of doshas. Understanding kriyakala is important for early diagnosis, prognosis, and adopting preventive and curative measures. The document also discusses ritu kriyakala, how doshas vary physiologically with the seasons. Treatment is easier if the