PMC4830172_01
Zones A, B, and C
IJT-8-35-g001.jpg
PMC4830172_01_IJT-8-35-g001.jpg
F1
Examination revealed a single patch of alopecia on the scalp, with polycyclic aspect [Figure 1] consisting of central zone (A), intermediate zone (B), and peripheral zone (C).
(a) Dermoscopic features of zone A shows an exclamation mark hair (1) and broken hair (2); (b) Dermoscopic features of zone B without signs of activity of the alopecia areata; (c) Dermoscopic features of zone C shows an exclamation mark hair (1) and broken hair (2)
IJT-8-35-g002.jpg
PMC4830172_01_IJT-8-35-g002.jpg
F2
Zone A showed an area of thinning white hair, exclamation mark hair, and broken hair [Figure 2a]. The zone B showed healthy brown-colored hair [Figure 2b]. Zone C showed an area white hair, exclamation mark hair, and broken hair [Figure 2c].