symptomatology

noun2

1. •
   The aggregate of symptoms of a particular disease; the pattern of symptoms, and their timing, that is characteristic of it.
2. •
   The scientific study of the symptoms of diseases, as an aspect of clinical medicine, differential diagnosis, public health, and so on.

   • Big Pharma has redefined the symptomatology of medical conditions in such a way as to expand enormously the market for its drugs. — 2012