§ 216
The cases are not rare in which a so-called corporeal disease that threatens to be fatal – a suppuration of the lungs, or the deterioration of some other important viscus, or some other disease of acute character, e.g., in childbed, etc. – becomes transformed into insanity, into a kind of melancholia or into mania by a rapid increase of the psychical symptoms that were previously present, whereupon the corporeal symptoms lose all their danger; these latter improve almost to perfect health, or rather they decrease to such a degree that their obscured presence can only be detected by the observation of a physician gifted with perseverance and penetration. In this manner they become transformed into a one-sided and, as it were, a local disease, in which the symptom of the mental disturbance, which was at first but slight, increases so as to be the chief symptom, and in a great measure occupies the place of the other (corporeal) symptoms, whose intensity it subdues in a palliative manner, so that, in short, the affections of the grosser corporeal organs become, as it were, transferred and conducted to the almost spiritual, mental and emotional organs, which the anatomist has never yet and never will reach with his scalpel.
