Figure 1
a) Clinical findings in the first visit. Reddish plaques are evident on the forehead and scalp. The plaque on the scalp forms a hairless area. b) Dermoscopic findings of the reddish plaque on the forehead. Brownish yellow dots with a whitish rim are observed in the follicular ostium. Red dots are detected in the interfollicular area. c) Histopathological findings (hematoxylin & eosin stain, ×200). An eosinophilic substance in the dilated infundibulum and a pale basophilic substance in the isthmus and root sheath are evident. Focal follicular spongiosis and vacuolar alterations of the interface between the outer root sheath and dermis are accompanied by follicular and perifollicular lymphocytic infiltration. Dilated capillary vessels are observed in the upper dermis. d) Histopathological findings (Alcian blue stain, pH 2.5, ×200). The substance deposited in the hair follicle is stained with Alcian blue. e) Clinical findings at 4 months after the first visit. Alopecic lesion on the scalp becomes less prominent.