Acne necroticans
Last Updated: 2023-07-07
Author(s): Anzengruber F., Navarini A.
ICD11: ED81.Y
Last Updated: 2023-07-07
Author(s): Anzengruber F., Navarini A.
ICD11: ED81.Y
Tree 1910.
Acne varioliformis, acne frontalis, acne atrophica, necrotising lymphocytic folliculitis.
Not related to acne vulgaris, rare, necrotising, acneiform inflammation of the hair follicles. It is a special form of pyoderma or folliculitis decalvans.
Itchy, reddish papules and pustules, which become necrotic in the course and leave a varioliform scar after the scab has fallen off. No comedones objectifiable.
Coagulase-negative staphylococci objectify, but are not always present. Comedones should rather not be present.
Hair attachment zone.
Initially, lymphocytic infiltrates, which organise themselves into an intrafollicular, granulocytic abscess in the course of time. In addition, necrosis of the infundibular epithelia may occur.
Frequent recurrences.
Initially, systemic and topical treatment is given. Even after discontinuation of systemic therapy, external antiseptic therapy must be continued over a long period of time to prevent recurrences.
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