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.