Rogvigyan and Vikrividnyan deal with the factors which are essential to understand disease processes as well as the diagnosis of diseases. It is very much necessary to understand the basic concepts, which are related to manifestation, diagnosis and prognosis of diseases.
Ayurveda is the science of life, hence concerned with prevention and cure of diseases . Since “Nidan Parivarjana” is the first step for prevention, the study of Nidan should be accurate.
Rognidan-Vikrutividnyan is the foundation of all the clinical subjects. The subject helps you to understand in depth the disease (Vyadhi-vidnyanam) & its pathogenesis (Samprapti Vidnyanam), the art & science of the clinical examination methods (Aatur or Rugna Parikshan Vidhi); the signs & symptoms or clinical features of the disease, the required investigations (Vyadhi pariksha vidhi) & the interpretation of their results as well.