Aetiology                     (Hetu)              What creates disease

Symptomotology        (Linga)             What is created

Therapeutics               (Aushadha)      How to reverse it

(Ca, Sutra. 1:4)

Causative factors       (Nidana)            Explains what creates disease

Pathology                    (Samprapti)       Explains what is created

Treatment                    (Chikitsa)           Principles of reversing disease

Diseases can be diagnosed by the study of aetiology, premonitory symptoms, actual symptoms, exploratory therapy and pathogenesis.

(Ca, Nidana 1:7)

On the basis of these factors, the physician with peace of mind and unimpaired intellect should understand the disease properly.

(Ca, Nidana. 1:13)