Clinical features and variants of Acne
What are the common sites of acne?
1- Non-inflammatory acne
- Closed comedones (whiteheads) are small (1mm), skin-colored papules without and obvious follicular opening.
- Open comedones (blackheads), have dilated follicular opening filled with keratin plug, which has a black color due to oxidized lipid and melanin.
Non-inflammatory acne
Whiteheads, Closed comedones
Blackheads, Open comedones
