Changes

==== Classification of ulcers and causes ====

==== Classification of ulcers and causes ====

As said earlier, ulcers are of two types i.e. ''nija'' and ''agantuja'', another classification is clean and infected wound<ref>Kaviraja Ambikadutta Shastri, Sushruta Samhita, Ist part, chikitsa sthana Chap 1, shlok no.8 ,Reprint 2013, Chaukhambha Sanskrit Sansthan, Varanasi, pp 5.</ref>. ''Nija vrana'' (endogenous ulcer) are caused by vitiation of ''doshas'' in the body or due to disease process. The term ''sharira desotha'' (ie.endogenous in origin) is used for morbid factors occurring in the body that cause ''nija vrana'' (i.e. endogenous ulcer). While ''agantuja vrana'' (exogenous ulcer) are caused by external factors (trauma or surgical intervention) like wound caused by stab injury, poisons, fire and sharp weapons or excessive tying of that organ (''bandha'') etc. In exogenous ulcers, vitiation of ''dosha'' occurs later. ''Nija vrana'' i.e. ''vataja, pittaja, kaphaja, raktaja'' and ''sannipataja'', are caused due to faulty habit, mode of living and seasonal variation. These vitiated ''dosha'', after a series of pathological processes (''shada-kriyakala'') get lodged at particular site resulting in the formation of ''vrana''.

As said earlier, ulcers are of two types i.e. ''nija'' and ''agantuja'', another classification is clean and infected wound. ''Nija vrana'' (endogenous ulcer) are caused by vitiation of ''doshas'' in the body or due to disease process. The term ''sharira desotha'' (ie.endogenous in origin) is used for morbid factors occurring in the body that cause ''nija vrana'' (i.e. endogenous ulcer). While ''agantuja vrana'' (exogenous ulcer) are caused by external factors (trauma or surgical intervention) like wound caused by stab injury, poisons, fire and sharp weapons or excessive tying of that organ (''bandha'') etc. In exogenous ulcers, vitiation of ''dosha'' occurs later. ''Nija vrana'' i.e. ''vataja, pittaja, kaphaja, raktaja'' and ''sannipataja'', are caused due to faulty habit, mode of living and seasonal variation. These vitiated ''dosha'', after a series of pathological processes (''shada-kriyakala'') get lodged at particular site resulting in the formation of ''vrana''.

==== ''Samprapti'' (pathogenesis of ''vrana''): based on ''shadakriya kala'' ====

==== ''Samprapti'' (pathogenesis of ''vrana''): based on ''shadakriya kala'' ====