The phenomena of a disease causing another disease is described as [[Nidanarthakara roga]]. [[Upadrava]] (complications), [[Udarka]] (marks of disease after it is cured) are applied for knowing the cause-effect relationship in pathogenesis of disease. | The phenomena of a disease causing another disease is described as [[Nidanarthakara roga]]. [[Upadrava]] (complications), [[Udarka]] (marks of disease after it is cured) are applied for knowing the cause-effect relationship in pathogenesis of disease. |