Here we have an impressive collection of old folk remedies using figs - the fruit, juice, milk (sap), and/or leaves - to cure everything from diseases of the breast to open wounds. As with all old remedies and cures, some actually work really well, others are ineffective and harmless, while some are downright dangerous. So, use common sense before trying any of these.
In General: Fig milk (or sap) is so commonly prescribed for ringworm, skin irritations, warts, and insect bites, that I think it must have some healing effect although wikipedia warns that the sap of the fig's green parts is an irritant to human skin. Figs (made into syrups or decoctions) are universally popular when it comes to treating coughs, colds, and and upper respiratory problems. Figs also appear to have a soothing effect on the teeth and gums. Possibly it has a drawing effect, pulling out the infection thus reducing the inflammation.
Abscess: A poultice made of barley meal or flour boiled in vinegar and honey, and a few dry figs put in them, dissolved all hard imposthumes (a collection of pus or abscess). Onion and figs beaten together help to ripen and break... sores (abcesses).
Angina: Anthimus (5th century Greek physician) employed fig emulsion in cases of angina....
... I am so sorry to do this to you, but this post has been moved to my new website, Folk Medicine Remedies and Cures, and can be found in its entirety here: Figs - A Cure For What Ails You
As you explore this site, you may find links to a "page not found" instead of something cool and magickal. For this I apologize. I am very working hard behind the scenes to restore those pages along with a link to their homes on my new website where they can be viewed in full.