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Line 618: − + − 2. Vaikrita hetu: If doshas are aggravated in the seasons other than their natural aggravation time and create the disease then they are termed as vaikrita hetus. E.g. Aggravation of pitta dosha in Vasant (spring) season. (natural aggravation time of pittadosha is Sharada ritu.)(7) [9]+ + + − Poorvarupa [premonitory signs]:
→F.Sixth Classification
This classifies ''nidana'' into the following types:
This classifies ''nidana'' into the following types:
#'''''Prakritahetu''''': Natural aggravation of ''doshas'' in the respective seasons and age is called as prakrita hetu 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) [9]
==== ''Poorvarupa'' (premonitory signs) ====
The earliest manifested symptoms (that are typically of less intensity) in any disease are termed as poorvarupa or prodromal symptoms of that disease. With time, some of these prodromal symptoms (poorvarupas) become more intense and become the primary symptoms (rupa / lakshana) of that disease. If all these prodromal symptoms become the main symptoms, then it indicates poor prognosis of the disease (i.e., the disease could be considered incurable or hardly curable). So, it is important that diseases do not show all the symptoms in their early stage, or a few of them should appear first with less intensity.
The earliest manifested symptoms (that are typically of less intensity) in any disease are termed as poorvarupa or prodromal symptoms of that disease. With time, some of these prodromal symptoms (poorvarupas) become more intense and become the primary symptoms (rupa / lakshana) of that disease. If all these prodromal symptoms become the main symptoms, then it indicates poor prognosis of the disease (i.e., the disease could be considered incurable or hardly curable). So, it is important that diseases do not show all the symptoms in their early stage, or a few of them should appear first with less intensity.
There are two types of Poorvarupa,
There are two types of Poorvarupa,