Overview
What is acne keloidalis nuchae (AKN)?
What is the pathophysiology of acne keloidalis nuchae (AKN)?
Which series of events occur in the pathophysiology of acne keloidalis nuchae (AKN)?
What causes acne keloidalis nuchae (AKN)?
What is the prevalence of acne keloidalis nuchae (AKN)?
What are the racial predilections of acne keloidalis nuchae (AKN)?
What are the sexual predilections of acne keloidalis nuchae (AKN)?
Which age groups are at highest risk for acne keloidalis nuchae (AKN)?
What is the prognosis of acne keloidalis nuchae (AKN)?
What is included in patient education about acne keloidalis nuchae (AKN)?
Presentation
Which clinical history findings are characteristic of acne keloidalis nuchae (AKN)?
Which physical findings are characteristic of acne keloidalis nuchae (AKN)?
What are the possible complications of acne keloidalis nuchae (AKN)?
DDX
What are the differential diagnoses for Acne Keloidalis Nuchae (AKN)?
Workup
What is the role of lab testing in the diagnosis of acne keloidalis nuchae (AKN)?
What is the role of biopsy in the diagnosis of acne keloidalis nuchae (AKN)?
Which histologic findings are characteristic of acne keloidalis nuchae (AKN)?
Treatment
How is acne keloidalis nuchae (AKN) treated?
What is the initial treatment for acne keloidalis nuchae (AKN) treated?
What is the role of phototherapy in the treatment of acne keloidalis nuchae (AKN)?
What is the role of corticosteroids in the treatment of acne keloidalis nuchae (AKN)?
What is the role of cryotherapy in the treatment of acne keloidalis nuchae (AKN)?
What is the role of radiation therapy in the treatment of acne keloidalis nuchae (AKN)?
What is included in maintenance therapy for acne keloidalis nuchae (AKN)?
What is the role of surgery in the treatment of acne keloidalis nuchae (AKN)?
How is acne keloidalis nuchae (AKN) prevented?
Medications
What is the goal of drug treatment for acne keloidalis nuchae (AKN)?
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Numerous acne keloidalis papules and plaques in a white man with straight hair.
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A large acne keloidalis plaque in a bandlike distribution at the posterior occiput in an African American man.
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A large acne keloidalis plaque on the occipital region in an African American patient. This man also had perifolliculitis of the scalp and acne conglobata (the follicular occlusion triad).
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Numerous papules that have coalesced into a large plaque, within which are tufts of hairs with several hair shafts exiting the same follicular orifice.
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A dense plasma cell infiltrate surrounding a hair follicle.
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Naked hair shafts embedded within a fibrotic dermis.