If you have a BOIL, then an Antiphlogistic Poultice is just the ticket.
"Antiphlogistic" is a fancy term for something that alleviates inflammation. It raises the question: what's a Phlogistic? Is it related to Phlogistin? The Greeks thought Phlogistin was something out there in the ether, and combined with fire to create, well, fire. More or less.
So Antiphlogistic as a term for an anti-inflammatory agent goes back to the ancient concept explaining fire. Pain = fire. Makes sense.