nosology

noun

1. 1

   A treatise or written classification of diseases.

2. 2

   The study of diseases; the systematic investigation or classification of disease.

3. 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)”