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The etiological factors can be divided into two:

The etiological factors can be divided into two:

#which cause direct ''vata'' vitiation and  

#which cause direct [[vata]] vitiation and  

#which cause indirect ''vata'' vitiation.  

#which cause indirect [[vata]] vitiation.  

Day sleep (''divaswapna'') do not directly lead to vitiation of ''vata''. However, it leads to formation of ''ama'' and cause ''vata'' vitiation indirectly by obstructing ''vata''. ''Vegasandharana'' (suppression of natural urges) and ''marmabhighata'' (trauma to vital organs) etc. are examples of direct vitiation. The pathogenesis is also bi-fold. The initial pathology is aggravation of ''vata'' and diminution of ''dhatus'' and vice versa. One augments the other. This ultimately causes emptiness in channels and rarity in tissues which gives more space for movements of ''vata''. The second pathology is by increase in ''dhatus'' leading to excessive filling in channels to cause their clogging and blocking ''vata''. (verse 15-19)

Day sleep (''divaswapna'') do not directly lead to vitiation of [[vata]]. However, it leads to formation of ''ama'' and cause [[vata]] vitiation indirectly by obstructing [[vata]]. ''Vegasandharana'' (suppression of natural urges) and ''marmabhighata'' (trauma to vital organs) etc. are examples of direct vitiation. The pathogenesis is also bi-fold. The initial pathology is aggravation of [[vata]] and diminution of [[dhatu]] and vice versa. One augments the other. This ultimately causes emptiness in channels and rarity in tissues which gives more space for movements of [[vata]]. The second pathology is by increase in [[dhatu]] leading to excessive filling in channels to cause their clogging and blocking [[vata]]. (verse 15-19)

==== Premonitory signs and symptoms ====

==== Premonitory signs and symptoms ====

==== Clinical features ====

==== Clinical features ====

The clinical presentations vary according to the specificity of ''hetu'' (cause) and ''sthana'' (location). The treatment options also vary accordingly. For example if ''vata prakopa'' takes place due to ''ruksha vriddhi'' in ''pakvashaya'' it may lead to habitual constipation in which ''snigdha, ushna'' and ''tikshna aushadha'' like ''mishraka sneha'' may be a good treatment option.  

The clinical presentations vary according to the specificity of [[hetu]] (cause) and ''sthana'' (location). The treatment options also vary accordingly. For example if [[vata]] prakopa takes place due to ''ruksha vriddhi'' in ''pakvashaya'' it may lead to habitual constipation in which ''snigdha, ushna'' and ''tikshna aushadha'' like ''mishraka sneha'' may be a good treatment option.  

If the same ''vata'' gets vitiated in ''amashaya'' due to ''snigdha vriddhi'', it leads to gastro-esophageal reflux disease (GERD), ''ruksha ushna'' and ''tikshna'' like ''gomutra bhavita shaddharana'' is the ideal treatment option. ''Anuvasana'' is the ideal therapy in ''vata'' vitiated in ''pakwashaya'', whereas ''vamana'' is the best therapy in ''vata'' vitiated in ''amashaya''. (verse 20-24)

If the same [[vata]] gets vitiated in ''amashaya'' due to ''snigdha vriddhi'', it leads to gastro-esophageal reflux disease (GERD), ''ruksha ushna'' and ''tikshna'' like ''gomutra bhavita shaddharana'' is the ideal treatment option. ''Anuvasana'' is the ideal therapy in[[vata]] vitiated in ''pakwashaya'', whereas [[vamana]] is the best therapy in [[vata]] vitiated in ''amashaya''. (verse 20-24)

==== Three modes of pathogenesis of ''vata'' diseases ====

==== Three modes of pathogenesis of [[vata]] diseases ====

The three characteristics of ''vata'' vitiation viz. ''svatantra dushti'' (vitiation due to independent specific causes), ''gata vata'' (increased movement of ''vata'') and ''avarana'' (obstruction to movement of ''vata''). imply three possible modes of pathogenesis in ''vata'' diseases. These can be further analyzed as follows; due to the following three important properties of ''vata'', it is regarded entirely different from other ''dosha''[Cha. Sa. [[Sutra Sthana]] 12/3]

The three characteristics of [[vata]] vitiation viz. ''svatantra dushti'' (vitiation due to independent specific causes), gata [[vata]] (increased movement of [[vata]]) and ''avarana'' (obstruction to movement of [[vata]]). imply three possible modes of pathogenesis in [[vata]] diseases. These can be further analyzed as follows; due to the following three important properties of [[vata]], it is regarded entirely different from other [[dosha]][Cha. Sa. [[Sutra Sthana]] 12/3]

#''Asamghāta'' (Incorporeal)

#''Asamghāta'' (Incorporeal)

#''Anavasthita'' (Unstable)

#''Anavasthita'' (Unstable)