Changes

==== D.Fourth classification ====

==== D.Fourth classification ====

This classification describes ''nidana'' to be of two types

This classification describes ''nidana'' to be of two types:

1. Utpadakahetu: These are the direct and primary causes of diseases which do not require the support of any other causes like dietetic, behavioral, psychological, accident, poisons etc.

#'''''Utpadakahetu''''': These are the direct and primary causes of diseases which do not require the support of any other causes like dietetic, behavioral, psychological, accident, poisons etc.

2. Vyanjakahetu – (The supportive causes of the diseases): These are the indirect causes of the diseases and become supportive to the utpadaka hetus. For example, the seasons, or time of the day (early morning, midday, evening, midnight) are the vyanjakahetus for various diseases.

#'''''Vyanjakahetu''''' – (The supportive causes of the diseases): These are the indirect causes of the diseases and become supportive to the ''utpadaka hetu''. For example, the seasons, or time of the day (early morning, midday, evening, midnight) are the ''vyanjakahetu'' for various diseases.

E. Fifth Classification      

==== E.Fifth Classification ====     

This classification describes nidana to be of two types:

This classification describes ''nidana'' to be of two types:

1. Bahya hetu (external causative factors): The causative factors like abnormal diet, activities and seasonal effects which create the disease are termed as bahya hetu.

#'''''Bahyahetu''''' (external causative factors): The causative factors like abnormal diet, activities and seasonal effects which create the disease are termed as ''bahyahetu''.

2.  Abhyantara hetu (Internal causative factors): Imbalance of the dosha, dhatu and mala alongwith psychosensorial dysfunctions as well malfunctions of agni are termed as abhyantara hetu.

#'''''Abhyantarahetu''''' (Internal causative factors): Imbalance of the ''dosha, dhatu'' and ''mala'' along with psycho-sensory dysfunctions as well malfunctions of ''agni'' are termed as ''abhyantarahetu''.

F. Sixth Classification   

==== F.Sixth Classification ====

This classifies nidana into the following types:

    

1. Prakrita hetu: 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.

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.

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]

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]