Acne signs
Many people think that acne is just pimples. But a person who has acne can have any of these blemishes:
Blackheads.
Whiteheads.
Papules.
Pustules (what many people call pimples).
Cysts.
Nodules.
Acne appears on the face in all of the photographs above, but it can appear on other areas of the body. Acne can appear on the back, chest, neck, shoulders, upper arms and buttocks.