It is peculiar that medicines come around on time with an exactitude. Diseases do the same thing, and we must see that it is also peculiar that they come with a regular cycle, a regular periodicity. Do not be surprised when your patient is perfectly under the influence of Aurum if he has a characteristic aggravation every twenty-one days. There are quite a number of remedies having fourteen-day aggravations, e. g., China and Arsenicum . Again, there are autumnal aggravations, spring aggravations, winter aggravations, aggravations from cold weather and aggravations in the summer from heat.
Some remedies have both the latter.