Organon §200

If the local symptom had still been present during the internal treatment, the homeopathic remedy for the total disease would have been discoverable. If the remedy were found and then used only internally, the continued presence of the local malady would show that the cure had not yet been completed. But if the local symptom were cured at its site, untouched by any external suppressive means, then this would prove persuasively that the malady had been extirpated right down to the root and that recovery from the total disease had flourished all the way to the desired goal. The local malady thus provides an inestimable, indispensable advantage in arriving at a complete cure.