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. 2016 Sep 9;6(4):471–507. doi: 10.1007/s13555-016-0141-6

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© Springer Healthcare 2016

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Fig. 12 — Dermoscopic examination of a case of tinea capitis displays scaling and the peculiar “comma” hair (white arrow), “corkscrew” hair (white circle), “zigzag” hair (black arrow) and “Morse code” hair (black arrowhead) (a). Dermoscopy of scalp psoriasis reveals the typical dotted vessels (magnified in the upper-right box) and white scales; a haemorrhagic spot is also evident (b). Differently from psoriasis, scalp seborrhoeic dermatitis shows yellowish scales and the characteristic arborising vessels (white circle) (c). Dermoscopic examination of pityriasis amiantacea displays diffuse white scaling and the characteristic compact white keratotic material adhering to a tuft of hair (asbestos-like scale) (d)