nosology

noun3

1. •
   A treatise or written classification of diseases.
2. •
   The study of diseases; the systematic investigation or classification of disease.
3. •
   The characteristics or scientific understanding of a specific disease.

   • 2003: Thomas Arnold … constructed a nosology of insanity explicitly on the basis of the Lockean philosophy of mind — Roy Porter, Flesh in the Age of Reason (Penguin 2004, p. 312) — 2003