Yes: Dermatologists classify acne into three types: comedonal (black and whiteheads), inflammatory(pimples), and cystic (deep acne cysts). Comedonal acne responds well to topical treatments (benzoyl peroxide, retina, etc), while inflammatory acne may need a combination of topicals and oral medications. Most patients with cystic acne do best with oral antibiotics or accutane.
Answered 3/4/2014
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Many: There are whiteheads, blackheads, papules, pustules, nodules, cysts.
Answered 10/3/2016
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