Preparation of Medicines

Organon Aphorism §285

In this way, the cure of very old disease may be furthered by the physician applying externally, rubbing it in the back, arms, extremities, the same medicine he gives internally and which showed itself curatively. In doing so, he must avoid parts subject to pain or spasm or skin eruption.

Samuel Hahnemann, Organon of Medicine, 6th edition (Boericke translation, public domain).

Expert explanation & clinical interpretation for this aphorism are coming soon.