Papule
An inflammatory comedo that resembles a small, red bump on the skin.
Papulopustular
A type of acne characterized by the presence of papules and pustules.
Post-inflammatory hyper-pigmentation
Excessive skin darkening in places where the skin was inflamed.
Propionibacterium acnes (P. Acnes):
A normal resident on the skin, P. Acnes will multiply rapidly in clogged hair follicles where sebum is trapped.
Pustule
A pustule (also called a pimple) is a small raised bump on the skin filled with pus, which is usually composed of inflammatory cells.
