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Aplasia cutis congenita (ACC) is a rare disorder characterized by localized absence of skin that most commonly affects the scalp. We present a case of ACC in a 45-day-old girl and the dermoscopic findings. Dermoscopy has shown to be an easy, fast and useful method for the diagnosis of this condition.

Trichoscopy is a tool each time more used in the diagnosis of hair disorders. We describe two cases of white nodules on the hair shaft, their findings under microscopy and trichoscopy. The diagnosis of these hair shaft abnormalities is usually done by microscopy or electron microscopy of the affected hair; but trichoscopy was an easy, rapid, comfortable and useful method in the differential diagnosis of these conditions.

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