This concludes the (excellent section titled) Nidana Sthana. [Diagnostic principles of diseases] Nidanarthakara roga (disease specific causes)Nidanarthakara roga (disease specific causes)Nidanarthakara roga (disease specific causes): Diseases can act as causative factors of other diseases as well .
For example, elevated temperature in jwara can cause raktapitta and raktapitta can cause jwara. Both the diseases (i.e jwara and raktapitta) may lead to shosha (depletion of dhatus).
Pleeha (enlargement of spleen) causes jathara (abdominal diseases including ascitis), which leads to shotha (generalized edema). Arsha (hemorrhoids) causes jathara (abdominal diseases including ascitis) that leads to gulma (abdominal lumps).
ते पूर्वं केवला रोगाः पश्चाद्धेत्वर्थकारिणः | उभयार्थकरा दृष्टास्तथैवैकार्थकारिणः [१] ||२०||
Conditions in their primary stages or forms manifest themselves as diseases and subsequently act as causative factors for other diseases. They thus play a dual role - as a disease and as a causative factor. Some of these play just one role as well– either as a disease or as a causative factor.