Changes

#'''''Prakritahetu''''': Natural aggravation of ''doshas'' in the respective seasons and age is called as ''prakritahetu'' which does not cause the disease alone but with the help of other aggravating factors may cause the disease.

#'''''Prakritahetu''''': Natural aggravation of ''doshas'' in the respective seasons and age is called as ''prakritahetu'' which does not cause the disease alone but with the help of other aggravating factors may cause the disease.

#'''''Vaikritahetu''''': If ''doshas'' are aggravated in the seasons other than their natural aggravation time and create the disease then they are termed as ''vaikritahetu''.  E.g. Aggravation of ''pitta dosha'' in ''Vasanta'' (spring) season. (natural aggravation time of ''pitta dosha'' is ''Sharada ritu''.)(7) <ref>Madhavakar, Madhava Nidanam, Pancha Nidanalakshanam, Edited by Prof. Yadunandana Upadhyaya, Thirtyth Edition Chaukhambha Sanskrit Sansthana, Varanasi, 2000, 196. </ref>

#'''''Vaikritahetu''''': If ''doshas'' are aggravated in the seasons other than their natural aggravation time and create the disease then they are termed as ''vaikritahetu''.  E.g. Aggravation of ''pitta dosha'' in ''Vasanta'' (spring) season. (natural aggravation time of ''pitta dosha'' is ''Sharada ritu''.)(7) <ref>Madhavakar, Madhava Nidanam, Chap.1, Pancha Nidanalakshanam, Verse 8. In: Prof. Yadunandana Upadhyaya, Editor. Madhava Nidanam. 30th ed. Varanasi: Chaukhambha Sanskrit Sansthana; 2000.p.196. </ref>

==== ''Poorvarupa'' (premonitory signs) ====

==== ''Poorvarupa'' (premonitory signs) ====