Pathogenesis 3
The first signs of acne are comedones, which can be closed comedones (whiteheads) as the plug becomes complete, or open comedones (blackheads). The black colour is due to melanin.
The first signs of acne are comedones, which can be closed comedones (whiteheads) as the plug becomes complete, or open comedones (blackheads). The black colour is due to melanin.
