This section is from the "Impaired Health: Its Cause And Cure" (Volume 1) book, by John H. Tilden. Also available from Amazon: Impaired health its cause and cure: A repudiation of the conventional treatment of disease
The study of medicine is divided into four subjects, namely
I. Pathology: that part of medical science which studies disease.
A. Etiology: the investigation of morbific causes.
B. Pathogeny: an explanation of the mode of action of causes-how cause produces the development of disease.
C. Pathological Physiology: morbid reactions under disease-producing causes.
D. Pathological Anatomy: which reveals the structural change resulting from disease.
E. Symptomatology: which accounts for disturbances.
F. Nosology: which describes and classifies disease.
II. Diagnosis: which determines the place where a given disease belongs in Nosology.
III. Prognosis: which fortells the outcome of disease.
IV. Therapeutics: which endeavors to relieve, modify, and cure disease.