Different combinations of symptoms cause different kinds of acne, with names you've probably heard before: Blackheads, whiteheads, pimples, pustules … technically, they all mean different things.
When they developed pustules Francisco Xavier de Balmis y Berenguer, the doctor who had organised the expedition, used the lymph therein to inoculate two more.
It can look different, depending on your pigment but essentially the features like flat bumps to raise bumps to pustules, to the scabs that is going to be consistent.
If you can clearly recognize your condition as acne (whiteheads, blackheads, or pustules), you can treat those areas with a benzoyl peroxide spot treatment or salicylic acid.
So this flower is large, sort of red, with sort of lumps and bumps on it that look like rotting pustules, and it also releases the most awful stench that does smell exactly like a rotting corpse.