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Nevus comedonicus has a predilection for the face and neck area. Nevus comedonicus presents with grouped, dilated, plugged follicular ostia in a honeycomb pattern. The plugged ostia contain lamellated keratinaceous material. Their appearance resembles black dots but the material cannot be easily removed mechanically in contrast to acne comedones. Nevus comedonicus lesions might present with various patterns of distribution: unilateral, bilateral, linear, interrupted, segmental, or blaschkoid.
Last updated on 05-01-20