Ember, Persian fire and other similar rashes

These two names are sometimes given to all generally corrosive, burning pimples, from which a blister and scab form, as from a burn and cauterization, and sometimes Persian fire is used to call such rashes of this kind, in which there are corrosive, burning, blister-forming pimples of the herpes type, spreading and wet. Their matter is yellow gall with a small amount of black bile, going slightly deeper; the pimples are numerous and small, and it seems that there is a sharp juice present here, causing a strong boil and a rash.

And sometimes acne is called coal, from which the sore spot darkens and the organ becomes black like coal, and at the same time there is no moisture. Their matter is strongly black-billed, going deep, the pimples are few in number, large in size, similar to alfalfa grains. Usually there are no small pimples and an ember forms from the very beginning; in all cases the disease begins with itching, like jarab. Sometimes Persian fire and coals turn into blisters and something burning flows from them, as after cauterization, burning the sore spot, ashy in color or black, although the color is often leaden. The area around the coal is very inflamed, not very red and rather blackish.

With pimples, actually called coals, the bottom of the ulcer is dark, with a fiery tint, sparkling like a hot coal.

The Persian fire moves and becomes clearly faster, while the ember forms more slowly and lies deeper.

The matter of these rashes is the matter of all other acne and lichens, but with Persian fire it is sharp. When such rashes appear in meat, they resolve more easily, and if they form in nerves, they are more stable and disperse more slowly. Both come from burnt yellow bile mixed with black bile, and therefore they both form a black scab, but the Persian fire is more of a yellow bile, and the coal contains more black bile. If you want, you can call any of these rashes, due to their common property, coal and then subdivide them, or you can call both, due to the same property, Persian fire and then subdivide them, but you can also call each one special name; Doctors sometimes do both, and there is not much difference. With such tumors, as well as with various malignant varieties of ordinary and millet herpes, sometimes there are strong, very bad and deadly fevers, and sometimes these rashes arise as a result of pestilence; they often resemble phlegmon and at first, especially in the year of pestilence, are somewhat blackish.