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Image Number 527 (Acne Keloidalis Nuchae)

 
Morphology:
Plaque

Diagnosis: Acne Keloidalis Nuchae

Site: Neck nape

Sex: M

Age: 45

Type: Clinical

Description: Keloid like plaque studded with pustules and tufts of polytrichia producing doll like hair

Submitted by: Shahbaz Janjua

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Differential Diagnosis

History: Acne keloidalis nuchae was first described by Kaposi in 1869 as dermatitis papillaris capillitii.  It is characterized by chronic folliculitis and perifolliculitis of the occipital part of the scalp and the posterior part of the neck, with subsequent healing with keloid like lesions, sometimes with discharging sinuses.  The keloid like lesions may coalesce to form large plaques, which gradually enlarge for years.

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